There are so many options available out there. I strongly suggest investigating an 8020 solution, and really sit down and think about how you want things to sit. Spend time in your box visualizing. I was lucky that I had a platform in my canopy for years that was very basic, so I knew what I didn’t want, what I would like, and the orientation I like to lounge.
You can check out my build on my build page:
Also a walk through on my YouTube channel. From a weight perspective you can shed some pounds by going with a 8020 solution. The key is remembering that you’re not gaining any weight savings if you’re going to use heavy cabinet grade plywood on your platform.
My setup in an XL camper is around 750lbs with electrical before loading full gear (320lbs for the camper, 430 or so for the platform)