Good points which we have discussed through the contemplation of buying our own RV. I grew up with RV's. We had 7 as a family over the years and my wife and I have rented different layout large DP units the last 5-6 years... Our boys are 2 and 4 so we have a lot of use before we get to the teen years. One other consideration we are weighing is that the adults will bed down later and getup earlier than the kids for the foreseeable future so having the rear bunks could allow us to entertain, visit and start / end the day without having to wake the boys...