My opinion keep the roadster.... I had the same feelings after I got my Diablo Roadster, I thought I liked the coupe/hard top better. It wasn't until I finished the car I was glad I kept it as a roadster. I have the best of both worlds, keep the top on or take it off.
For me I find it easier to work on the inside cabin by just taking off the roof, and not having to worry about 2 more side windows to deal with. I leave my roof on 95% of the time so its like a hard top to me. Another small fact that plays into head is safety, should I get into an accident where my doors wont come open- I can flip the front 2 latches and then pull 2 pins out that's on the rear connections and push up on the roof and Im out....
Kinda a cheesy thought but it does add a little comfort mentally for me....
New Rule- all newbs must post pics of their project!!!!