I have had a few. The ones I now have are, Montana Canvas and Canvas Cabin. The Montana is 14 x 16, treated canvas. It's a good HEAVY tent, the Canvas Cabin is untreated and is a great tent. I make internal frames for both. Davis makes good tents also. I prefer the Canvas Cabin with its doors in each end. The size of your party, mandates something bigger than anything I have. 16 x20 would accommodate a group your size, smaller will sleep them, but your living outside, the rest of the time. Just in my opinion.