Lots of updates here, we removed the old dry-rotted tires and changed them ourself and used balancing beads. Good tire shops are hard to find around here and well again, this is a budget build.
Tire Changer: Harbor Freight
Balancing Beads: Amazon / Counteract
Additionally, we started tearing down the inside and working on rust remediation, this is just a wire wheel and a scraper to get at this and get it down to serviceable steel. Then weld in patches where needed.