If you have any kind of go-fast thoughts/desires, the SS is what you want, not the PC. The PC is a cruiser, through and through.
The "how tall on a trailer" question is very sketchy to answer. ALL trailers are different, as this could be skewed by as many as 6-8 inches or more depending on setup. Also, you need to specify arch, bimini, and/or just windshield height.