I think your situation has truck plus travel trailer written all over it.
I like truck campers and have had them most of my life but they get really small really quick for living in for any extended amount of time.
Storage is almost nothing in a camper.
With a trailer, you get WAY more space, plus you can put a canopy topper on your truck and have lots more room for your stuff.
It's easier to hitch up or drop a traile than loading a camper (unless you have a Stable-Lift camper lift) and you can just park that at the campground and have a real "house".
That's definitely what I'd do in your shoes.