I hadn't set up ff7_bc.exe as the launchable.
However, now I'm back to crashing once the main menu is up. I have tried several variations throughout the day in terms of installation ( included following the guide to the letter, twice ) along with experiments here and there, but nothing is bringing me back to a working state.
My most recent attempt:
*Uninstall via Steam
*Remove FF7 Directory
*Use FF7-REMOVE-Keys.exe
*Reinstall FF7 via steam
*Use FF7_GameConverter_7H.exe
*Unzip 7H_1.54
*Update to 1.55
*Configure OpenGL
*Place Save files in user_<id> folder ( save00.ff7 - save09.ff7 )
*Download all mods I intend to use
*Arrange load orders as specified by Tutorial Page
*Configure each mod to personal preference
*Launch Game
*Oops! Fuck your shit homie, you'll never relive your favorite childhood ( next to Xenogears ) game before they FFXV that shit
*Change FF7 Exe to ff7_bc.exe as suggested by EQ2Alyza
*Refer to previous Oops! error
Profile Details
Miscellaneous - Jessie Mod
	ID: 1e2e93b2-5e26-4364-9b00-d316c618813b
	Version: 2.3
Miscellaneous - Team Avalanche Fields
	ID: 72152e09-7b5c-4942-8465-afa154e20b08
	Version: 2.0
	field_ta = 1
Battle Models - Weapons
	ID: fe92e17c-f60d-4cf5-9c79-889f93d1edcb
	Version: 2.1
	weapons_aerith = 3
	weapons_caitsith = 1
	weapons_cloud = 2
	weapons_sephiroth = 1
	weapons_yuffie = 1
Field Models - Objects
	ID: 7f1274cf-3bf8-4ae6-a722-d2f374c902fc
	Version: 2.1
	huge_materia = 1
	materia = 2
	potions = 1
	save_point = 2
Animations
	ID: 653bb2b6-3999-4bb0-bc21-2ae299bb7b87
	Version: 2.1
	f_animation = 1
	w_animation = 1
	60fps = 1
	fba = 0
	fbn = 0
	fed = 0
	fs = 0
Battle Models - Characters
	ID: 1917178d-5ef1-42e2-9c5c-58045588b3f4
	Version: 2.1
	models_aerith = 2
	models_barret = 4
	models_caitsith = 1
	models_cid = 1
	models_cloud = 7
	models_redxiii = 1
	models_sephiroth = 1
	models_tifa = 2
	models_vincent = 3
	models_yuffie = 2
Battle Models - Enemies
	ID: 267ef1d2-599c-4f4d-860c-b838f402c587
	Version: 2.1
	models_diamond = 1
	models_frogs = 2
	models_scorpion = 1
	models_jenova = 1
	models_joker = 1
	models_life_form = 1
	models_motorball = 1
	models_ruby = 3
	models_soldiers = 1
	models_sweeper = 1
Battle Textures
	ID: ad83c8b5-249d-41f9-84a4-cd35200da6af
	Version: 2.0
	battle_bg = 2
Field Models - Main Characters
	ID: efe1b0ec-6ce3-43f7-9659-f1bc9d36f60c
	Version: 2.2
	models_aerith = 2
	models_barret = 6
	models_caitsith = 1
	models_cid = 2
	models_cloud = 0
	models_redxiii = 3
	models_sephiroth = 1
	models_tifa = 4
	models_vincent = 2
	models_yuffie = 1
Field Models - Non-Player Characters
	ID: d329bc05-3dc0-4f35-94aa-632986f47194
	Version: 2.34
	models_base = 1
	models_biggs = 1
	models_jessie = 1
	models_wedge = 1
Field Textures - yarLson
	ID: 339ca282-645f-4053-83d1-de8777f8b1bc
	Version: 2.3
	field_bg = 1
Media - Movies
	ID: 4f61f4cf-6733-4503-93f4-ed7fdfee21a6
	Version: 2.1
	movie = 2
Media - Music and Sound
	ID: 2bdd4a94-4b06-46ca-af0a-37b9dfef25aa
	Version: 2.1
	music = 3
	sound = 0
Menu - Avatars and Backdrops
	ID: aec06415-0f12-410b-ac43-f4e89e363729
	Version: 2.1
	avatars_aerith = 2
	avatars_barret = 2
	avatars_cait_sith = 2
	avatars_chocobo = 2
	avatars_cid = 2
	avatars_cloud = 2
	avatars_cloud_young = 2
	avatars_red_xiii = 2
	avatars_sephiroth = 2
	avatars_tifa = 2
	avatars_vincent = 2
	avatars_yuffie = 2
	game_over = 1
	prelude = 2
	start_menu = 7
Minigames Collection
	ID: ee718ab3-0aa5-43b2-b7bc-82c69fcd19d0
	Version: 2.31
	chocobo_models = 1
	condor_models = 1
	motorbike_models = 2
	chocobo_textures = 1
	coaster_textures = 1
	condor_textures = 1
	motorbike_textures = 1
	snowboard_textures = 1
	wonder_square = 1
Spell Textures
	ID: b97373a2-aa9f-40e3-9a3d-aeaa846391d4
	Version: 2.1
	magic = 2
	coin = 0
	limit = 9
The Reunion - Beacause and Menu Overhaul
	ID: 3ee8d570-ac8b-471e-ad3f-53de21248652
	Version: 2.1
	beacause = 0
	menu = 1
	break = 0
	hand = 0
	nbb = 0
	ncb = 0
World Models - Characters
	ID: a5b9a2f3-c9e3-4cbb-947a-1489ebeeb921
	Version: 2.1
	cid_world = 2
	cloud_world = 5
	tifa_world = 4
World Models - Enemies
	ID: 0d0cc481-4cc3-4e7e-9529-fa7077b38615
	Version: 2.0
	diamond = 2
	emerald = 1
	ruby = 1
	ultima = 1
World Models - Vehicles
	ID: 0e056cf4-7b37-49e1-aa9e-c57bc73db954
	Version: 2.0
	buggy = 1
	chocobo = 1
	highwind = 1
	submarine = 1
	tiny_bronco = 1
World Textures
	ID: 35e0906d-7da4-4da2-b10d-87149d291a38
	Version: 2.0
	world_bg = 2
APP.LOG
[00000000] INFO: FF7/FF8 OpenGL driver version 0.8.1b
[00000000] INFO: Auto-detected version: FF7 1.02 US English
[00000000] INFO: ATI Technologies Inc. Radeon RX 580 Series 4.5.13474 Compatibility Profile Context 22.19.162.4
[00000000] INFO: OpenGL 2.0 support detected
[00000000] INFO: Using PBO
[00000000] INFO: Found swap_control extension
[00000000] INFO: Max texture size: 16384x16384
[00000000] INFO: Original resolution 640x480, window size 640x480, output resolution 640x480, internal resolution 3840x2160
[00000000] INFO: Shader limits: varying 128, vert uniform 16384, frag uniform 16384
[00000000] INFO: FFMpeg movie player plugin loaded
[00000000] INFO: FFMpeg version SVN-r25886, Copyright (c) 2000-2010 Fabrice Bellard, et al.
[00000000] INFO: VGMStream music plugin loaded
[00000000] INFO: Loading external library Multi.dll
[00000000] LOCK UNLOCK TEST 
[00000001] MATRIX INITIALIZE 
[00000001] INITIALIZE DD/D3D END 
[00000001] initializing sound...
[00000001] creating dsound primary buffer
[00000001] reading audio file
[00000001] loading static sounds
[00000001] sound initialized
[00000001] set music volume: 127
[00000001] set music volume: 127
[00000001] Entering MAIN
[00000001] Exiting MAIN
[00000001] START OF CREDITS!!!
[00000001] INFO: B:\Steam\steamapps\common\FINAL FANTASY VII\data\movies\eidoslogo.avi; h264/aac 1280x960, 15.000000 FPS, duration: 10.193000, frames: 153
[00000056] set music volume trans: 127->0, step=60
[00000121] END OF CREDITS!!!
[00000121] Entering MAIN
[00000121] set music volume: 127
[00000121] Exiting MAIN
[00000121] START OF MENU SYSTEM!!!
[00000121] ERROR: unhandled exception
Whether you guys respond to this or not, I'll keep tinkering, even though that ERROR doesn't really say anything. "Unhandled exception" is like "undefined variable" or "type function error". Eugh.
Thank you both very much for your help, and EQ2Alyza for specifically curating this project for so long. I remember first dabbling with it in college, almost 6 years ago.. thanks so much for keeping up with it. =)