The KZ noted looks like a nice model with everything you need. Only drawback for me...and that's just me....would be no sink in the bathroom, but lots of folks have a set up like that and it works fine for them. Without my going back and looking, if you haven't looked into the Rockwood Mini Lites, there may be something there that would work. Also, re tent trailers, I'm assuming they're meaning a PUP, but if you haven't checked Hybrids, I wouldn't rule it out quite yet. Our first trailer was a HTT and worked very well. You said you need 2 bunks, but you might at least think about something like the ROO 183 with 3 queen beds. Just a suggestion. We loved ours. People either love 'em or hate 'em. Don't know about the heated underbelly in the MiniLites, but doubt seriously in the HTT. Good luck, you've got a challenge here.