Do you do a lot of rock crawling? If not, I would not spend the cash on 4:88. Regearing is expensive. If you on not have a press and a lot of time and patience, I wouldn't recommend attempting it yourself. I have the same setup as you and am running 33's on the rocks without too much problem. It just depends if you have that spare 1K laying around that you don't know what to do with. Swapping out axles with stronger ones from say a Wagoneer is more economical if you are still wanting lower gears.
94 YJ, 2.5, 4" ProComp Lift, 33's,
EZ Locker, Warn M8000 winch, Home made tire/jack carrier, nurf bars.