At 3 inches you will be OK in the manual with the front drive shaft, auto might be a problem.
The kit contains most of what you will need, though it does not include anything to correct the caster in the front end or rear pinion angle. The rear you could probably get away without, but you will definately need more caster in the front.
Worst case scenario you can use cam bolts for the lower arms, personally I would be looking at adjustable control arms or the AEV front drop brackets (I just installed these)
With 33in tyres you will be OK with the stock gearing, not good, but OK. Ideally 4.1's would be where I be going, but you are looking at quite a bit of cash as the stock 3.21 carrier needs changing as well. You will be down on power.
Cheers from Downunder, Dave.
2010 Dark Charcoal Pearl 'Renegade' pack (includes dual top options, 17in alloys, side steps etc).
2.5in Flexy springs, Bilstien 5100's, Teraflex rear trackbar bracket, Synergy front and rear sway bar links and front disco kit, Synergy steering damper relocation bracket, AEV front drop brackets, ARB front and rear bar, 10,000lb rope winch, Britax Xray Vision driving lights, GME 3440 UHF radio.