Yeap... +/- 1 degree is more than enough, after spring installation you should end up with 0.75 degrees negative so the bolts will be just fine. As for brand I cant say, I used some that I bought off www.overboost.com
I know what you're saying, but the 5th gen has very little weight over the rear end and im not spending that much on suspension for a car thats only on the road 4-5 months a year. lol. It might just get gabrials in the back. sprongs, sway bars and poly bushings are costing enough, I just need the front to handle, I can handle the it from there. hahahahaha.
the rear is, the front however is not. THis is more of a rather be safe then ossry kinda deal, it'll only be about $70CDN once I get it, so it'l be a good investment. I might even just buy the 2degree kit in case I go lower in the years to come.