Good luck! I hope you get exactly what you want.
From the impression I got from the brokers, the BWV can be a bit hard to come by, but the other two should be okay. If you get offered OKW, I would consider sitting it out a bit longer and waiting for AKV.
I rented DVC points for my last stay and did a split stay BWV (5 nights) and AKV (6 nights). We really like both, but I think if I knew then what I knew now, I would have booked the whole stay for AKV. We stayed in Jambo and got upgraded to a Savannah view room and we LOVE LOVE LOVED it. I can't actually put into words how much we loved it. I couldn't wait to get back from the parks in the afternoons to sit in my quiet place out on the balcony and watch the animals. I just felt happy every minute I was in that room. They give you an animal identification tick sheet at the start of your stay with all the animals and birds you can potentially see around property and I loved sitting and watching them wander by. Plus I loved the theming, the warm woods in the room, rocking chairs around the campfire, toasting marshmallows, and the huge beautiful lobby. (I think I would have loved it a tiny bit less had we been staying in Kidani and not had that grand lobby).
The restaurants were great as well. I recommend getting the first Sanaa booking of the day (I think 5pm from memory) and asking for a window table. We got a table easy as we were the first one into the restaurant, but within about 10 minutes all window tables were taken. I think they lay out food for the animals just outside the restaurant about this time, because there were so many different animals out the window I didn't know which way to look.
Lastly I preferred the transport from AKV than from BWV. I know it's rare to hear someone say this given the location of the two, but I just hated how many stops the BW buses had to make at other hotels and the boats are really slow and crowded. We always walked to Hollywood Studios and almost always got there faster than the boat.
In saying that, the BW was great for walking to Epcot, the bakery is yummy, and we did enjoy watching the fireworks from our balcony at night (Wishes to the left, Illuminations to the right, and a carnival scene down below). But no fireworks view was better to me than those animals.
Awww, now I'm feeling all sentimental. I will get back to Animal Kingdom lodge one day...