Average cargo load for retired couple fulltiming?

A 32'-36' is big for my thinking BUT I'm not interested in fulltiming for more than 2 years and as such have different needs. Still if I had a longer term interest I guess I'd just know how much the items I felt were essential, weighed, as well as their volume and then chose an RV unit accordingly. The internet is your friend on that level as you can plug in the model number of most anything and pull up it weight and dimensions which will give you the volume.

HTH and have fun!