Nah man, you've got this stuff all confused.
First off, 245's in the front are too narrow for a 9" wheel, get 8" wheels in the front.
In the rear, 10.5" on +35mm offset will not work, they will stick out of the fenders more than inch. A 10.5" wheel is too wide. You would need a +42mm offset and still need to roll your fenders, and they will still stick out. If they don't have a 9.5" or 10" wide, go with 9" in the rear and 8" in the front. You can safely run a 275 tire on a 9" wheel in the rear.