Unfortunately the OP is now about $10k invested in a (best possible case) $10k rig for just new front end and tires.
From a financial perspective, it was time to learn how to fix things yourself or cut bait about $10k ago.
Not knowing what else has been done to the rig (could have another recent $15k into drivetrain and couple grand in seat covers etc, or literally been living on maint and replacing only what fails completlty) it still seems the best bet is to cut bait and learn from the scenario.
Take the immediate finances out of it, this is also a vacation rig, right? What are the chances a 400k mi 20 year old rig is anywhere near as reliable as a much newer 1/4 the miles or less vehicle? Very slim unless the OP has basically rebuilt the whole truck by now.