I don't have all the FG mobs done, but when I do add mobs without official info, I base them off a monster a level or two lower than the one I'm adding if the new ones are to be higher level, increasing the stats slightly.
Finding the mesh is the fun part, unless you've got a map that spawns a mob for every mesh from here to the moon. If you log on Trinity I'll summon you to that map so you can pick out IDs, unless you can do it yourself.
You're not retarded
he's wise