We have a slightly different situation. There are 4 of us that fly the airplane. My daughter is 5'2" and my partner is 6'2". The tall pilot has no difficulty fitting. We installed a forward adjustment for the seat and she also uses a back cushion. No problems. Full control of the rudders and brakes and stick. The crotch strap won't fit but everything else does.
If we had snap on rudder extensions that would be better but we have not figured a way of doing that. If anybody has a design idea we would certainly like to hear about it.
Richard