I can make the FX go pretty well...and I don't feel like I'm going to break it. I am 240 and 6'5"and definitely tough on gear. It's well balanced and pretty fast. Due to the buoyancy I can take 2 no problem.
Is there an active Hobie fleet in your area?
Would you like to race it?
Selecting a boat with an active class (no matter what boat you're talking about) in your area is a good thing to look at.