I have to agree with previous posters on going with CR. A friend of mine just got back from PO and told me that with five in their room, it was very hard. They had two doubles and a trundle, and the only person who got any sleep on any night was the child in the trundle. I have to admit her husband is a large man, but even when she moved into her son's bed, she got pummelled all night, lol. She told me next time she will definately go with a room with two queens and a daybed, which if I am not mistaken CR has.
While I really don't like the CR, I think it is the better of the two, especially with the convenience of the monorail.
On an offnote, we had six in the Poly and it worked out great. There were two beds (can't recall if queen or double) and a daybed. We had one baby, so it was a great fit for us.