2" BB is fine for that size tire, they will clear fine. You should make sure you are running 3.5 to 4" back spacing on the rims, otherwise you will probably get some rub on full turn attempts.
If you plan on offroading, you will want to go with a better (read bigger) lift and or body lift/MML kit.
97 TJ 2.5l, 5spd. 2" BB, TeraFlex VS9550 Shocks, Hella 550s. Hard top, Safari top.