Nice car and good call on the 6MT. You'll get the hang of it. I always tell people, anyone who knew me at 16 knows that nothing I could do at that age could possibly be that hard.
I'm not sure if the seats are identical (I bet they are, though), but Saleen sells takeoff leather seat covers for $100 if you find that you just can't live with the cloth seats. The cloth is pretty nice though. I've had my car six months and I still sometimes wonder if I should have gone Base instead.
2013 GT Premium 6MT. GHIG, Black/Cashmere 401A interior, Comfort Package, 19" 5-spoke wheels. Two boosters, one RFT card for my parking garage at work, daily driver.