As I have mentioned many times on various threads and in PM's tire size is not accurate with what is stamped on them, I have seen 225 narrower than 205s in extreme cases and 225 race tires that were closer to 245. You will want to look at the diameter, section width and tread width of the tires you are considering as some 225 are a bit to wide for an 8" wheel and some 205s are perfect for it. I chose 9" wide wheels knowing it was going to be a very serious fitment issue including changing the rear camber and then rolling and pulling the fenders and barely get them to fit in the back.
A 16x8 +38 which sounds like the RPF1, with the right 225 should work out well though you will have to trim a bit of the front fender to bumper cover mounting area which is not hard to do and many have done so.
What specific tires are you looking at or if in general what do you need from them, ultimate summer grip, great summer but last a bit longer, autocross, HPDE, high performance all seasons?
I do not have a really good rear picture and do have the rear higher than the front for aero reasons and when we have the dogs and us in the car it is around 600lbs plus cargo, that and I only lower a car to where the geometry still works very well, too low gives up to much grip and too many headaches driving on public roads.
I have 6 more of the same wheels with race tires on them