As Mark noted the panel, seat and rudder pedal placement can be adjusted as you build to fit leg length etc. The pedals can be moved but they are not "adjustable " in the normal sense of the word. Seat backs can also be adjusted and there is a "RV 14" mod that moves the seat back further back for long legged people which works pretty well. Sit in the one you are thinking of and then you can get help here depending on what you think needs to be done.
I have a -7 with the pedals forward, the panel extension, and the RV 14 seat mod and it is pretty comfortable (6' 3").