wheel Offset Question for 240 hatch

[Sushibandito]

As forewarning, I saw all the crap by using search, my question is more tire size related...So I bought this set with money I made from getting rid of an old set of Sparco seats... Figured its fresh rubber for this winter and will make it so my car doesn't slide around in the rain like Nancy Kerrigan at the ice rink.

The guy included 5mm spacers for the fronts, and it seems like spacers aren't Required? for the rears, but helpful if I want it to look something other than lame.

So I was thinking 10mm spacers all around, and that will give me +28 Front and +25 Rear, as far as I can figure. And I don't think that will require a pull or roll, since flush is +20 or +22 (I think). The sidewall in the rear is really freaking tall though, will it clear the wheel wheel, or just be a rub-job all day long? I don't mind if it throws the speedo off a bit, my car almost never leaves the city.

Fronts: 17x7 +38225/45-17Rears:17x9 +35255/45-17