Welcome! I like the mod list for your 1 build! Hard to argue with a water meth kit! Love them. Have one in my 380whp '86 GLH-T, had one in my R56 Cooper S and the new 1'er will get one too.
I'm also planning to build a quad exhaust setup for the beast.. trying to figure out the rear valance as well, couple of good options, but we'll see
What sort of damage did you take to the back/hip? I was 22 when I ended up on a hillside, encased in aluminum that was once an airplane on a medevac. A couple crushed vertebrae, broken hand, multiple mandibular fractures and some shoulder damage..