Sure, you can 33's with the 4-cylinder. But you will need to re-gear.
I'd say wait to find a 4.0 with stock 3.73's, better to spend the extra money to find this setup. Much more liveable, and gives you room for future build too if you decide to go bigger.
'98 Sport, 4.0, AX-15, D44, 3.73, stock w/ 10k original miles
Gone - 2000 Sport, 1987 YJ, 1997 SE, 1998 XJ