http://ngplus.net/index.php?/files/file/5-ff7-kernel-editor-wall-market-wm-by-nfitc1-psxpc/
that link works perfectly 
I think this is the same version I found through google. When I try to run the exe, nothing happens. I am on Windows 10 so maybe either it doesn't like something with my OS or is being blocked somehow by an anti-virus software despite not showing anything in there either.

I've thought on this a little more after watching some videos from New Threat 2.0 and I think it is confirmed that no more than 54 spells can exist. So revising what original ask a bit...
I'm thinking to replace the Poisona, Resist, Escape, Remove, Wall, DeBarrier, and FullCure spells altogether - with the following changes to the existing Materia.
--Spell Changes--
Poisona to Aero
Resist to Aero2/Aerora
Wall to Aero3/Aeroga
Escape to Water
Remove to Water2/Watera
DeBarrier to Water3/Waterga
FullCure to Pearl (effectively the same spell used for New Threat 2.0)
--Materia Changes--
Heal Materia to Wind Materia
Level 1: Aero
Level 2: Aero2/Aerora
Level 3: Aero3/Aeroga
Level 4: MASTER
Element: Wind
Growth Rate: Mirror the Earth Materia (0/6000/22000/40000)
Exit Materia to Water Materia
Level 1: Water
Level 2: Water2/Watera
Level 3: Water3/Waterga
Level 4: MASTER
Element: Water
Growth Rate: Mirror the Gravity Materia (0/10000/20000/40000)
Barrier Materia
Level 1: Esuna
Level 2: Barrier/Protect
Level 3: MBarrier/Shell
Level 4: Reflect
Level 5: MASTER
Destruct Materia
Level 1: None
Level 2: DeSpell/Dispel
Level 3: Death
Level 4: MASTER
Full Cure Materia to Pearl Materia
Level 1: None
Level 2: Pearl
Level 3: MASTER
Element: Holy
Growth Rate: Mirror the Shield Materia (0/10000/100000)