Hey Paulo,
Well in your case you will have think about what sort of aeros you are doing. What are the limitations of the a/c?.
If you are asking about which chutes will fit who?, well the answer to that is that most parachutes will fit anyone so that will not be a prob. If you have a a/c you will have a parachute for every seat (thats sensible). Don't know even if it is worth having a chute in the first place though?.
Keep Looping the Loop though!!!!
Yours,
Int