Does this 17"/18"setup seem like it will work?

In the rear, I am going to guess that you will be fairly close to the wheel lip on the outside and fine on the inside. But not certain as I can't remember the width of a BBP 8.75 right now so going off info I have saved from other people.

Specifically, one guy was running a 9" rim with 5" BS (should be zero offset) with an A-Body 8.75 (assuming BBP) and a 275 series tire. He said he had to bend the rear wheel lip a tad. Lot's of assumptions there, so not feeling as good as I would like with that info.