Thanks. This is the info I'm looking for. Not new to wrenching, just new to French mopeds. I'm not afraid to experiment, just trying to avoid mistakes that have already been made by others.
So when it comes time to split the av7 cases for new seals and bearings, the ones in there right now sound neglected, I'll be putting in the race crank from the kit linked in the OP, and maybe a 47mm kit tuned conservatively, or just another stock cylinder with some port work. Thats a decision for another day.