Seasoned T/C Owner Needs your help.!!

If you are disabled at all, then try going up the steps and the big step to the bed several times in a row in something like the Everest. Do you need that fold-away hand rail to secure yourself? If everything is O.K., then start looking for a 2WD 550/5500 truck as a platform before you even buy the camper.
Remember the prime directive about living or traveling, long term in a TC. The longer you are out on the road, the larger the TC and truck need to be.
I've never run into anyone who thinks they have too much truck for the camper. It's usually the other way around.
If you are elderly, but in pretty good shape, I suggest looking at a 24-30 foot Lazy Daze class C. Why? A very low platform. I think there is only one step to get in the side entrance with the rest of the floor on the same plane, and they have a good user report record. It's the same reasoning that we, as older adults, purchased a single level, ranch style house to retire and grow old in. We retired in 2006, and so far, so good.
Our difference is the size of our 1998 Lance camper. It's only 8'6" of floor. 1842 pounds, wet. Bought it used. Paid $6500 cash @ 3 years old, and used 3 times. We've owned it for 17 years and done some upgrades to make it better, off-season, and is great to travel in as it will park in a regular parking place. I don't much like the seating, but suffer through with a back hugger back rests around the dinette. We've spent hundreds of nights in the box in all 4 seasons; in terrible weather; road or no road; layovering in cities, and enjoy the best night's sleep we ever get.
So, find out what is important to you, and find a way to make it happen.
A conductor (musical, not train) friend of mine put it this way when asked of his relative success in the conducting biz: "Know what you want, and know how to get it."
jefe
Lunch stop at June Lake, CA.