Is this fair value / size of truck needed

A man has a 2000 (year) Northwoods Arctic Fox 990 in what appears to be fantastic condition. Supposedly the first owner didn't use it much, this man bought it and hasn't used it, so, he is selling because he doesn't see any time to use it. Asking $12k. Has 9'10" floor. Alum frame and fiberglass exterior. I am told... All the base options and nearly all the extra options. Onan propane generator that only has 20 hrs on it, 80w solar panel, media center, new 19" color lcd Tv, rear door awning, side awning, dining area slide out, upgraded windows, privacy curtains, electric jacks, single jack or multiple jack operation, large capacity dual lp tanks, large capacity fresh, gray and black water tanks, private wet bath w/ cabinets, outdoor shower, outside plug ins. No leaks, 22" oven/3 burner w/ cover, upgraded truck tie downs. 2 new deep cycle marine batteries, microwave, 3 way refrigerator, very well insulated, upgraded cabinets. Worth it or not?

I don't have a truck big enough. I have read "buy the TC, then the truck," so that is my goal. I assume I would need a 1-ton. Is SRW enough? Or would a 3/4 ton do?