You new wheels and spacers will work just fine on your car. Make sure your bolts are long enough for full engagement. 245/45-17 is the biggest that will fit. Personnally I would go with 235/45-17. The 245/45 is too tall and acceleration will suffer.

If ride is important go with 4 seasons type tires. I use AVS Sport on mine in 245/45-16 on 8" wheels with ET20. The ride is good but is a little noisier than stock.