Gary Wescott wrote an article about mild Jeep JK upgrades to prepare for adventure travel. The mods include a 3 inch lift kit, undercarriage armor and bumpers, roof rack, battery upgrade, a winch, and roof rack. Cost of the upgrades: About $5000, not including labor to install.
http://www.trucktrend.com/features/news/163_1210_10_way_to_trick_out_your_jeep/index.html
http://www.trucktrend.com/features/news/163_1210_10_way_to_trick_out_your_jeep/index.html