As above, not a good idea. Can it be done, yes, should it, no!
It’s not just the lift you should be concerned of. Brakes, steering and gearing should all be considered. Brakes and steering are all wear parts. If this stuff has been poorly maintained, the larger tires will take an additional toll to these items in short order.
If it’s a great deal, buy them but don’t mount them, save up for a lift and address any maintenance issues.
These TJ aren’t getting any younger. 16 years is the youngest one, which at 10,000miles per year of driving it puts most TJ’s in the sweet spot for a lot of maintenance