Will you be flying or driving? Do you enjoy using Disney transportation, or are you lost without a car? Will you be cooking a lot or are you confused by the purpose of that stove thingy?
We went to bwv with my sisters and their families in April. BWV was perfect for DH and myself. However, my sisters with their kids wanted to cook a lot, use their cars, and go off property. We toured commando and don't think they ever saw the activities on the boardwalk. My sisters also thought bwv was a little too grand for their relaxed vacation with kids. If I had a do-over, I would have gone for OKW in a minute. It wasn't a total loss. BWV was very convenient to 2 parks.
All three kids were under 10.
You might want to ask the same question over on the DVC Planning board. Good Luck!