Jeeps are not great on-road vehicles, but they are the "best" of both worlds. During harsh weather, there is nothing better than a Jeep. For snow and floods, a Jeep is the vehicle of choice. For fun off-road, the Jeep is the vehicle of choice. But, if your only concern is on-road performance, you would probably be better with a Sports Car, Lexus or Mercedes Benz.
If your concern is on-road performance, forget the lift and big tires, and stay stock with your 4-wheel, on the fly, and you'll have a great all purpose vehicle. And, make sure you get a TJ or a JK, and a 4.0 Liter engine. Just don't expect great gas mileage.