Take your time shopping.
New RVs come out in the Fall and you can get good deals at shows, but the best deal are at the dealers on 2014 and 2015 left-overs. They want these units GONE!
By my experience and others that I've read and heard about, you should have a target of around 30% off MSRP this time of the year.
As far as models, it's hard to find a really small/light bunkhouse in the 3000lbs weight range. There are a few out there, but they may be hard to find. Just be disciplined about what you can safely tow.
2013 Winnebago 2301BH-Red
2012 Ram 2500 Megacab HO CTD