It will probably be tight for you. I'm 6'3" and slender and it is easily one of the roomiest supercars I have been in. I have a 430 and cannot wear a helmet in it without being a good bit uncomfortable. I could make it work in the 12C; I'd estimate that I have about 1.5 - 2" clearance above my head. Maybe if you fiddle with the seat a bit you could fit in it, but I'd suggest you try it out when you can get in one. On the big plus side, the seats are very comfortable for taller people... unlike the daytona seats in my 430 which feel like they were really meant for someone 5'10"... especially after spending a few hours in them, today.
The doors are basically a composite plastic, from what I understand, so my guess is that they will be less susceptible to door dings than other constructions. But vandals and door digs depends a lot on how careful you are when you park and where you live. Through a lot of care I've only had one ding over the past 5 years in my cars.
As far as a daily driver, it will certainly get attention. But, honestly, I think people will likely make more assumptions about you if you're in a Ferrari or definitely a Lambo. The only concern I'd have about it being a daily driver is reliability at this point. It still isn't proven, but there don't appear to be any regular, major issues, yet. One other issue - at least hear in the states - would be residual value if you made it your daily driver. Many owners try to keep the mileage low in order to keep higher residual value. But I really feel that if I'm going to buy something, I'm going to enjoy it.