You will have to get 2 rooms, which will cost you a mint at any deluxe resort. We stayed at the Poly in 1999. The rooms sleep 5 and we have 4 kids but the youngest was 2 at the time so we were legal. It was gorgeous and I would stay there again. The location is fantastic! We recently bought Vacation Club points. We own at BCV and stayed there in March. Now every Disney trip we will have a 2 bedroom condo with multiple tvs, a full kitchen, and a washer and dryer. Buying in is pricey, but if I were you I would check out the home away from home resorts either through Disney or by renting points from a DVC member. You could all stay together then. But back to your question, both resorts are beautiful and a delight to stay at. Have fun planning your stay! I can't imagine having 6 kids and managing a big trip, we have a hard enough time planning it, and paying for it, with 4! We are going in October for a quicky trip staying at OKW!!!
(12, 10, 7, 5, 2, 1 now)!!! Any info would be great. 
. I am also hoping for a great AP code!! Now that my step kids are older 12 & 10 it is much easier because my step-son is a huge help and he will be almot 14 when we go next summer!!
