I'm not trying to be a super-d!ck but a turbo isn't going to make you faster-learning to drive will.
People r/t DOES NOT MATTER you can have a 10 sec r/t and you'd still run whatever you're going to run.
After you get this turbo do you think it's gonna help you launch? Nope, 17's won't kill you're launch that bad, just get a feel for it and 9.5-1 CR only means you lost what? 5-10 hp from a 10-1 CR? So you're power between you and a stock GSR engine you should STILL be making more power. You would be hitting 14's w/ a better launch.
Good luck.