Here is a shot of my 04. I had 18x9.5 w/45mm offset in the rear. The tires are 275/35R18 BFG Drag Radials (very square shoulder).
For this setup, I had to grind off about 1/2 of the fender lip and add the King Springs (1/2 lower front with stock height rear).
Now to compare your desired rims to mine.
10" wide is 254mm.
Center is 127mm
inside spacing 127+50=177mm
outside spacing 127-50=77mm
9.5" wide is 241mm
center is 120.65mm
inside spacing is 120.65+45=165.65mm
outside spacing is 120.65-45=75.65
So your desired rim go in towards the center of the car 11.35mm more than my rim. This shouldn't be a problem, on my car there was about 20mm of clearance there.
On the outside, your rim will stick out about 1.35mm more than mine.
As long as your rear cradle is good and centered, you should be able to get away with removing the fender lip. King Springs would be highly recommended, though, and the stance with the lower front and stock height rear is really nice. The King Springs are progressive rate and are about 40% stiffer than stock. Normal driving is very similar to stock but there is a big difference in cornering and the rear does not squat near as much.
Remember this is napkin fitment so results might not be exact in the real world.
Hope this helps
Bob