these also look like the single wheels in you pic..
something like one of the 6000lb harbor freight floor jacks will jack the thing up fine. i even have used them on bobcat 331 excavators which weigh about 8000 lbs.
if i were getting different wheels, i would check the pickup/truck wrecking yards, they should not charge more than half the cost of a new wheel, and have to guarentee them to fit and not be out of round. i would also check for hole elongation and cracks between the stud openings. you also might get almost new tires on them for not much more..
the wrecking yards have to get rid of them somehow.. they either gotta sell them, or dismount the rims for the scrap pile, which leaves the tires that cost them for disposal... they are usually very happy to sell the wheels with the tires on...