Johnster
I'm 6'2"and have never hadan issue, I also had a golf 1.8T (5 cars ago), AMD Hybrid special, if you get back ache, tilt your seat further forward so you sit straighter, I had the same issue, this solved it straight away. If you bang your head, that's because you've bought a sports car and its lower than your golf, I'm sure after a while the pain will remind you to duck. The gear box is heavy, it's a muscle car trait, round town I don't think its an issue ( I had an S2000 before, thats a fooking nightmare in traffic, the Zeds an angel in comparison). Seat belt = either cut down on the pies ( no offence mean't, you could be twiggy for all I know!). The boot has been answered.
I've had my car since July, I've had alot of other cars too, some up the scale, some down, but what I can tell you is I fooking love it and it will be a classic, start again and re-introduce yourself to it and you will find out it's a super car.