Looking to buy a ightweight, modest travel trailer

I had considered getting some cute teardrop thing and making the kids sleep in a tent, but they're pretty fragile peanuts and would make sadfaces.

I had been wondering about the relative value of rooftop and wall A/C, and had not considered that I should care about that cargo/bunk access thing. It's also good for kids sneaking out in the middle of the night, always a plus!