About point 4. I'm over 5'11 and I have no problem at all. Actually there is plenty of room. The spec-r which has a sunroof however is much lower and possibly maybe what your on about.
Point 5. The gearbox is that bad. It's not just the fault in fourth gear, it makes alot of noise and is just generally annoying. The fact that knowing that one day it will blow up and that it must be replaced with a five speed is annoying. Especially since it will probably significantly depreciate the car.