Would this be a good/logical setup?

[Dave384]

Car: '09 370Z Base w/o Sports Package
Wheels: R-1 Racing - Drift
Front: 19" x 8.5" (35mm offset)
Rear: 19" x 9.5" (30mm offset)



1) I am a novice at all this, but according to my calculations this would move the front wheels outward by 6mm and the rear wheels inward by 6mm from the standard 19" Rays wheels (which I am comparing these wheels to even though I don't have them on my car). To adjust for the rear wheels sitting inward a little further I thought I could add maybe some 10mm or 15mm spacers in the rear ultimately moving them outward by 4mm (with 10mm spacers) or 9mm (with the 15mm spacers). I figured I would use the Ichiba spacers like Minicobra1 used in this thread 15mm Spacer installed (Rear). I am not set on getting these wheels, but I also wanted to see if my reasoning is correct as far as wheel width/offset/spacers is concerned.
2) Are spacers reliable for everyday driving?
3) Are R-1 Racing wheels a decent wheel?

Thanks for the help.