ET45 is waaaay too shallow of an offset... when the wheels are bolted to the hub, they will nest into the fender and be very close to suspension components.

Keep the fronts as close as possible to 30-35mm offset.

Rears can be anywhere between 20-35mm... any higher number than that, and you will scrub the inner fender on large bumps.

With a 19" front, I wouldn't go wider than 8.5" wheel with 32mm offset. If you've lowered the suspension, I would even drop the width down to 8" with a 32mm offset. That will give you proper clearance of the suspension nut.

Cheers,