Hesus freakin Kristo man,
Keep the weight down and the rig lightweight, run whatcha brung to the party, don't go backwards! Otherwise what's the point? A Barbie street beach jeep? I like the aluminum armor idea OP.
If I had a nickel for every OME & 31's comment......
1st off:
31's aren't free.
The OP says the Jeep has a 4" lift already.
The OP also has the 35's already.
The combined OME lift & new 31's won't save anything really over a regear in money, time & labor.
The purpose of the regear is to maintain drivability. Most 4-cylinder TJ's already came with 4.10's to run the 225x75x15 tires stock on them when the Jeep was new. Obviously the Jeep engineers knew something about keeping the power up or there would have been 3.55's or worse installed from the factory.
Keep what you have and regear the axles. If you want more then lunchbox lockers or some kind of traction aid added during regear.
OP, keep your focus....
It's a cheap Jeep project and for $1200 buy in with that much rust, don't waste time on replacing suspension parts or wheels & tires. Not worth it.......