I would think that if you got another car identical to your current car, but much faster, you may reconsider keeping the slower identical one around.
Drive a coupe around, take it for long drives and see if you can deal with having that roof, and extra protection, over your head with no option of removing it at the press of the switch.
You also gotta ask yourself, and answer honestly, what it is that you want to do with the SRT.