Forest River 240BHXL might fit your needs. Bunkhouse design, 2 doors, separate bedroom, electric fireplace will heat the whole TT in mild winter weather. Second door into bathroom is great for kids and dogs to enter and clean up, not have to traipse through the whole trailer to use restroom.
Overall Length - 28' 6"
Dry weight - 5343 pounds
tongue weight - 570 pounds
Tried to talk my wife down from our 263BHXL, but we really liked a few of the extras the larger trailer gave us: Outdoor kitchen, couch that converts to bed, has storage underneath. I think the 263BHXL is the max I would tow with half ton, too much for the Suburban.
What is your payload rating?
2020 Chevy Silverado 1500
Forest River Wildwood XLite 263BHXL