SC for something that'll see a lot of miles/regular use, TC for car shows and the strip. TC is a more complex install, by a long chalk. It's not stratospherically complex but there is a lot more heaving and fiddling.
Going single on the turbo make the main attraction of turbo diminish somewhat. Twins give the ridiculous low end power and sufficient a/r for good high rpm jam as well.
2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto N/A tune. 100 shot nitrous on BBR tune. Best e/t 11.38 at 120.85
2012 Premium GT, Candy Red, Brembo package, 3.73, MT82, Comfort, Tech, et al. Procal tune, Roush UCA, UMI poly LCA, GT500s, Steeda red bracket, Hoosier 28x10x16 bias drags. Best e/t 11.91 at 115.23 RIP