G5King

I'm looking at these rims on Tirerack.com, but I need to know that the specs are okay for my G5, and you all seem to be experts, so I ask you.

First ones:
Kazera KZ-A
18 x 7.5
45mm offset
6.10" backspacing
4-100 bolt pattern (I'm for sure on this, just posting for informational purposes)
21.2 lbs
215/40-18 recommended tire size.

Second ones:
Enkei Performance RZ-5
18x7.5
42mm offset
5.86" backspacing
4-100 bolt pattern
24.5 lbs
215/40-18 recommended tire size

Both have black spokes with chrome lips. How do you think that looks on a silver car? Hurry, I'm waiting to order.

Also, what about my wheel sensors and my speedo and gas milage things? Will they be thrown off? I'm rolling 15" steelies right now, but I couldn't tell you the tire size to be honest.