Just remember a few things. If you get bigger tires your fuel mileage around town will suffer. If you go too big, you will need to regear, or you will lose all of your torque. Jeeps have slip yokes out of teh transfer case. If you lift too far, you will need to lower the transfer case or get a slip yoke eliminator and a custom drive shaft to avoid driveline vibrations. These reasons are why I would limit myself to a 2" or less lift and no larger than 31" tires on a daily driver.

One other thing, mud tires look great, but they are loud and hurt your fuel economy. So if it is a daily driver, try and find a happy medium between agressive tread and driver friendly. I have GoodYear Duratracs, and they are kinda loud now that I have some miles on em. You can never go wrong with BFG All Terrain T/A's.