If that is Sage in the avatar--she is just adorable...
With your small family, a fifth wheel can be a neat deal to live in, IF you have enough vehicle to tow it when you want to travel. So, time to do some research to see what is available in your price range, then figure out what you would need to pull it. Lots of info about this selection process in many of the forums. Do NOT buy a truck until you know what you will end up with for a trailer.
Best of luck in your quest.
2016 Tiffin 40 QBH
2015 38RSSA, traded
2005 TK3 #1869, 10 yrs of memories,
2017 F450 KR--one more Ford is it
2009 F450 4x4-died; 2010 F450-retired