Another option would be the 8-lug steel wheels sold for trailers. They're "not DOT rated" for trucks, but don't worry- - - -they're plenty strong and lots of stovebolters with 8-lug 3/4 ton trucks are using them. Ditto on the Ford van wheel- - - -the only drawback is that the center hole does not fit the hub flange closely, so the weight of the vehicle is carried on the lug studs. Be sure to use a torque wrench when tightening the lug nuts to assure all the lugs carry equal weight. 100 ft/lbs. is a good number.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!