Don’t be afraid of an older unit if it has been well maintained. I had a 2000 Hurricane 30q bought it in 2012 sold in in 2015. Just some minor engine maintenance issue and such. We bought what we have now with bunk beds to use for great nephew and a place for pet cages and supplies. 30 ft is a good size as has decent space, easy to maneuver. I think the shorter units are easier to get into small spaces but have a harsher ride due to the short wheel base, minimal storage, and you’ll want to trade up after a few rainy days with the five of you stuck inside.
Net of the above for your price range you can find a mid size C or A class that you will be happier with, but that’s my opinion.