Trade in value for your F250 toward a one ton truck (probably advisable for a longer gooseneck w/living qtrs) would probably be good right now but if you use your F250 for other things as well it might be better suited, particularly if it’s the 6.2 or 7.3 gasser. Pulling 9,000 lbs would be a stretch for a Class C or Class A gas MH but if you value comfort a used diesel pusher similar to one I’ve linked here would be nice. Used MH prices are starting back down and with current interest rates cash talks. Just look for a better brand like Newmar with meticulous maintenance records, hiring a professional inspector may be in order as well.
Example only:
https://bham.craigslist.org/rvs/d/ma...565959923.html
Just my 2 cents…