With your kids being so young....a room with a trundle at POR will suit you wonderfully! When the kids are older, you may be better off going for the 2 rooms at a value but try POR now!
We just did two connecting rooms at POR for our party of 10...4 adults, and 6 kids ages 14,11,7,5,3 & 1 and it worked great! The privacy curtain helped keep the light out of others eyes while some of us got up early. We usually were so wiped out after getting back from the parks, we all went to sleep as soon as we hit the bed. My kids aren't bothered by the TV though so if I wanted to catch some news it didn't keep them awake.
Moneywise, POR is the best! It is a lovely resort with a great pool that your kids will love. My kids can't wait to go back.