Thinking back on some of the past trailer beds we've endured. Some barely better than sleeping on the ground, to seeming like a burlap sack filled with straw, lol.
Firstly I can't really help you much on the installation aspect of the Sleep Number. Ours was pre-installed from the factory. the main consideration would be the electrical availability in that location, under bed headboard area. The manufacturer had run a circuit there in preparation, then there was an additional couple of holes drilled through the platform for the air tubes.
Operation is pretty straight forward. Others have commented and we've noted also that elevation has an effect on the overall settings and mattress fullness. We try to remember to deflate it somewhat prior to travel, as it can swell / sag. Each location tends to need a soft-reset.
Comfort is excellent, being our first experience with this type product. I'm (6'2") a #80 she's a #55. We also have a memory foam topper on top of it the DW wanted. I didn't feel it was all that necessary, but have to admit we've slept far better than in recent yrs. heck decades, on any mattress. Worth the price of admission!
I'm guessing it's lighter than just about any mattress we've owned (S&B included)even with the topper.