Congrats on the new TJ and welcome to WF. I've got a 99 SE and am in the same boat as far as making decisions on mods.
As far as solid axle anything goes, yeah it rides a bit rough, be glad you've got coils instead of leafs. Part of owning a Jeep.
My recommendations after a bit of research and talking to friends for a decent moderately priced lift would be:
- Rusty's Offroad 2 inch springs all round with your choice of shocks, as although the Rusty's are good they're not longevity shocks, and if you really want a nicer ride, you may want to consider Bilstein or Old Man Emu.
- Teraflex 3 inch kit is pretty extensive for its price, and gets good reviews.
-I'm going with the Doetsch Tech DT3000's cause of the good reviews and price when the time comes. I'm waiting on whether my buddy's Rusty's springs are coming off his Rubicon so I'll just have to wait haha.
31's should be fine with the stock 4.11s. I have 235/75/15s and I feel I'm revving a little high in 5th on the highway as it is. I believe I'll be stepping up to 31s when they wear out.
A 4.0 Liter Throttle body will compliment that intake and exhaust nicely and an e-fan to replace the clutch fan will free up some power to send to the wheels.
Best of Luck!...I love my jeep and I'm sure you will to. And hopefully the seasoned guys won't think my advice is bogus haha.