What you are hunting for is called a bunkhouse. They are great for families. I see that you are from Cali and I do not know what brands that they have there. You did say Sunny Brook and I believe that they may be made here in Indiana. So I am going to recommend a Jayco. They are a decent mid line trailer and both 5th wheels and travel trailers come in bunk house models. For ease of towing I would also recommend a 5th wheel, since it connects into the bed of your truck it makes for a smaller tow length from front bumber to back bumber of trailer. This also usually makes it fit into somewhat smaller spaces so that you could go with a somewhat longer unit. Also I have seen some bunkhouses that are set up in such a way that the bunks are actually in a small bedroom of their own with a table and an area that you can put a small television. This would be good for days when it is raining and everyone is stuck inside. Anyway like I said earlier I would Recommend that you look at the Jayco if they are out that way.