Are you booking directly with Disney or booking using DVC points by renting? If you plan on renting points, you need to hurry because October is prime DVC time. What size villa are you booking? If you get a studio, OKW will be the only one with two real queen beds. BCV will have one queen bed, one double sleeper sofa and a bunk sized murphy bed that folds down under the television. AKV will have one queen bed and one double sleeper sofa.
If you are looking at a one bedroom villa, they will have one king bed in the master bedroom and one queen sleeper sofa in the living room. In addition, OKW and AKV will have a twin sized sleeper chair in the living room. If you somehow manage to get a value one bedroom villa at Jambo House, it won't have the twin sleeper chair. OKW
OKW will have the most room of any of the three villas. Most of the buildings there won't have an elevator and you'll be taking stairs if you get a second or third floor villa.