Nice rig and great price.
You have been there before, so know all stuff you have to do to get these bad boys working good.
Great choice/combo of suspension and tyres. Will go anywhere on that setup, and depending where you are, it is totally legal. (WA still had 50mm total lift including suspension and tyres).
I would suggest upgrading to a brand new XJ viscous fan or a ZJ upgraded fan. As far as cooling, i have tried every mod under the sun. Bonnet vents, ceramic coated headers, high flow pumps, triple threat electric fan set up.. and nothing worked until i got a ZJ viscous fan. Temps all dropped back to normal, even in extreme driving. However, it was a bit noisy, so i got a brand new Hayden XJ viscous fan. It still worked a treat. I think they wear out and just dont pull the air anymore.
Also, an engine watchdog is a good idea in these. Mine is setup to monitor and alarm both tranny and engine temps. I put it all into a pod on the dash with CB radio and Motor Minder Vacuum gauge.
Look forward to seeing your progress on here.
Cheers,