Very well done videos.
... and you are doing good work on the camper, too!
One thing I would keep in mind for next time is the way you did your floor frame long rail extensions. The simple butt joints are probably adequate given the composite structure of the floor, but if you had alternated the butt ends end for end (i.e. every other short piece to the front) it would have been a bit stronger with no penalty from having done so. With them all to the back it creates a potential hinge point. Yes it is a small nit, but when trying to build lightly it pays to take advantage of every trick there is.
I am looking forward to your next edition!
