My inseam is also 27". After hearing a friend who is around 6'3" complain after riding in a couple of other people's RVs, I decided to push the rudder pedals as forward as possible and am installing a 3" rudder pedal extension and an separate 1" extension at the top of the brake pedals for the pilot side. I'm also using the forward most hinge line for the seat back bottom and lots of cushions. The fixed crotch strap location should be, ahem, interesting
In talking to my tall friend I also was grateful that I did not install any kind of center console under the instrument panel, nor any extra strip below the instrument panel for switches. All these things tend to restrict room for feet, legs, knees and available adjusting/squirming/shifting positions in flight.
I think one advantage we shorter folks have, is that the seating position tends to be fairly upright with the seat back hinge in the aft position for taller people. Move the seat hinge to the most forward position and you're more reclined, which I find more comfy. You just have to make sure you've got enough cushions to be no more than 2 or three fingers below the canopy with your headset. If you want more upright, then the seat back spacer thing that fits into the slots in the cross member will enable this. Most folks I've talked to simply leave the back in it's maximum reclined position.
All this from a guy with a only a few hours in OTHER peoples RVs, and around 6 hours of PIC in a 7A so take it for what it's worth (probably less than .02 Cents!). I've done my transition training and hope to be flying in late spring, after finishing and a brush up training.
Jeremy
RV7A