15x10 wheels may be pushing it, i know a lot of people run them that way but i would stay with a 15x8, especially if you are going to use it offroad and air down, an 8 inch rim will hold the bead better at lower pressure.
as for the 2" BB, some will tell you it won't work, but i did it. i didn't wheel it that way, but the only time i got rubbing was when my sway bar shifts to the driverside a little and then when i make tight right turns it rubs. after a few months i swapped out the front spacer for V8 ZJ springs (2.25" of lift vs 1.75 fron the spacer), i still have the BB spacer in the rear. i like how it rides and looks, and i was able to do it without spending $800 on a full blown lift kit.
first pic is with the BB only, second is with the ZJ springs. BTW, those are the stock 15x8 ravine wheels with a 1.25" wheel spacer.
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