I have a 31 ft coach and I wouldn't want to even think about a 23 - 24 ft coach with 3 grand kids in there with me and my wife.... Even for a weekend. I don't think that you would regret the 28 ft coach at all. There are plenty of good used coaches in the size your looking for. Like another poster has said, the biggest killer of RV 's is water intrusion... Period. I know other RV owners that bought big and then went smaller and vice versa. Most say that it's easier to trade down then to trade up in size as far as trade in allowence is concerned. $$$