I'm going to advise against converting XNA Lara models. Most (if not all) XNA Lara models are based on existing models from other games. For example, i'm pretty sure the face on that Cloud model was taken from Piers from Resident Evil 6 (i've seen a lot of XNA Lara models using Resident Evil characters as bases).
There's too many risks with XNA Lara models, so it's probably better to not bother (unless it's only for personal use, in which case go nuts).