Latte, to be honest I have tried and still possess, curved, dome, semi dome, and a hybrid of both. My garage is filled with years of failed attempts to have the perfect surround video experience. I have tried mirrors of all types and bouncing it in different ways. The only people who have mastered this are the TOOB people who will be releasing mid year in 2012. Look up TOOB, its a half sphere dome with a first surface mirror.
Now while this provides an incredible 3D feel without even running 3D and it display 3D content great, it provides a less field of view than three canted screens.
Now to my point. After all these years and literally at least 6 thousand dollars of trials and errors, I am happiest with my triple 46" canted screens. The largest FOV so far, literally almost at 180 degrees. The best image quality by far. And the easiest to set up. After all that trying to reinvent the wheel I found the easiest solution the best.
The angle between the screens I've found to be perfect is 32 degrees. It gives literally a HUGE field of view and still a wrap around effect if you have the screens 3.6 feet from your seat. The effect is literally incredible.
I'm trying to help you out buddy not to waste years of time like I did. You already have 2/3 of what you need to have a amazing racing experience. Get it done buddy and start having fun!