Stock size should be 265/65/17. Most go with a 265/70/17 in stock form. You could probably get by with a 255/75/17 (taller, but narrower) with minimal rubbing. The biggest you can possibly go in stock form is 275/70/17 (and BFG is one of the only ones that comes in that size). 285/70/17's require wheel spacers to clear the UCA and cause rubbing issues even with 3"+ lift.
If you're going for the aggressive look, first step IMO is a lift. You can get the parts for a lift for under $100, no reason not to start there. I'd say do a lift (even a small one would beat nothing) and then go with the 275/70's. Minor trimming may be required, but it'll be nothing major. You can do 285/70's, but it'll cost much more to get them to clear.