I would suggest another avenue. Simpler, cheaper, lighter, and versatile in that there are different types and you can vary the size.
Order an airbed from Amazon or get one from Walmart.
The twin sized, raised bed with internal electric pump that powers from the household outlet can be had for about $35.
Air Bed
You can also use hand pumps or battery powered pumps.
Dependent on the amount of air you inflate the mattress with, the size can vary to fit different configurations.
You can also get camper air bags. I have used them in the back of a van for sleeping on a trip.
Then there is the "lounger"
Lounger
Only the limits of your imagination will hold back the uses of the simple blow up mattresses.
Enjoy.