Congrats on the two newest! We just had our 4th in April and are heading down in Oct. But many in my family have 4+ kids and enjoyed staying in a large house/condo in the Orlando area. They liked the screened in pool for days at home and most of all the ROOM! The washer and dryer, and kitchen are a big plus too. We are doing a Mod this time, POR, ours are 6, 5, 2, and then 6months so we SHOULD fit!
Anyway good luck and have a great trip!