For tires, I suggest u go to ur local shop and do a trade in on the tires u have so u can live within ur means (500-1000). As far as lift., you WILL encounter driveline issues since u do go offroad with the height u want. If ur planning to go high, I would have extra money in the bank. 4 inches WILL alter geometry and u will need control arms to fix that.
I suggest staying at 2.5, get front lowers and rear uppers since u go offroad. That's all u will ever need. If u plan on going higher, expect to purchase front uppers and rear lowers.