Thanks for the help, everyone, and sorry for the delayed follow up. I finally had a chance to see a few trailers in person this weekend. I really like the Rockwood Roo 183 Hybrid, which has enough beds for us and our kids, BUT at 3904 pounds and 21'3", I"m not sure that a 4Runner could handle it. The 4Runner can tow 5,000 pounds per specs, BUT I know that just because the manufacturer says it can doesn't mean it's safe.
I'm wondering if we need to upgrade to an 8 cylinder Toyota Sequoia which is rated for 7,000 pounds. Hate to spend the extra money, but safety is key for us with 3 small children. We also saw a Coleman Light Bunkhouse 2405, but at 5,025 pounds and 27 feet, I'm wondering if it's not safe to tow with a Sequoia.
Thoughts? Sorry for all of the questions!!