Think about which parks you think you'll spend more time at & what kind of ambience you'd like when you are not at the park. Look at map of the WDW property. Everyone has their own opinions about their favorites.
BCV is great b/c of the pools & easy access to Epcot & MGM
BWV is great b/c of the activities, restaurant, & entertainment along the boardwalk + easy access to Epcot & MGM
VWL is great b/c of your a quick boat/bus ride away from MK, you can enjoy the Electrical Light Parade & fireworks from the beach area, & it has a very special ambience that many people find very relaxing + you might enjoy the shade of Ft. Wilderness in August when it's likely to be very hot.
AKL is obviously great for the animals & ambience, but is a longer bus ride away from most parks
SSR is nice IMHO if you like Downtown Disney, but otherwise feels too spread out for me, although the spa & main pool are very nice.
OKW is quieter & a little roomier but some find it too far from the parks
The joy of
DVC is that if you plan to stay at your home resort & then call at the 7 month window you can try the various DVC resort over time. Many people split their stays in order to do this. Ex.) VWL for 4 days & BWV for 3 days
Call Member Services as soon as you become official to check on availability. It may make your choice for you.
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