I was wondering if anyone could help me with a location to buy a good set of polyurat

So first question is fairly generic. Tirerack wasnt much help nor some of the PDF's and im too lazy to call my audi dealer of doom.
New tires and rims will be here tomorrow..well Today AM hehe - What's the recommended LBS to torque the lugnuts down to on this car? I was hearing the 85-100 range - Obviously I don't want to over tighten since im sure the OEM 17" Six spokes Have been over tightened. My rotors look a tad warped...Im sure ill see a few lugnuts on Well over 150lbs due to some jackass using an Impact Wrench to put them on. Hooray!
Hopefully take offs will be alot smoother going from 28lbs rims to 17lbs rims and im trying Goodyears new All-Season ResponseEdge tires.

2nd question.
I got the AWE Boost gauge installed and baileys diverter valve put in. First off two High Quality, very bad ass purchases I must say. Install for the Vent gauge however was not fun one bit. Cold start reads ~15inHG. Once warm reads ~20inHG Vac and Pedal mashed ~10-11psi. I have that PDF some one posted about the OEM Specs of a 180tt quattro with the K03 turbo I beleive and it says Max Turbo Boost of 1.8Bar. I admit defeat in not knowing wtf that means. So ~10-11psi boost range Is an accurate range for a 180tt w/ Borla exhaust/C.A.I yes?

Thanks for the help =)