We own at both. BWV 2 bedrooms are smaller than Kidani but close to the same size as SSR and Jambo. If size is an issue, Kidani is definitely the better.
At 7 months out getting BWV standard or boardwalk view (the best) are difficult and often impossible. Pool/garden views, usually available at 7 months most times of year, are usually fine but not as impressive as looking at animals at a savanna view at AKL (only boardwalk view tops that). At AKL, savanna and often standard views are usually easy to get at 7 months out but value can be difficult and concierge is usually impossible.
AKL as you are aware is busses to everywhere and its bus system is usually good. BWV is walk or boat to Epcot or Studios. Walk to Epcot is about 8 minutes and Studios about 20 to 25 (a little over a mile). Boat runs Epcot to BWV to YC/BC to S/D to Studios to S/D to YC/BC to BWV to Epcot. Thus short ride to Epcot either way (6 minutes) but long one to and from Studios (25 to 30 minutes). However, as veterans know you can easily walk over a bridge from BW to S/D boat dock and get the boat there to Studios or get off there coming back which makes the trip fairly short. Busses elsewhere, and its bus system is one of the worst -- shares with S/D (2 stops) and sometimes also with YC/BC (another 2 stops) and every time I have been at BWV there has been always at least two times when we had to wait for the bus to return from MK more than 40 minutes.
Other than its bus system, BWV is ideal. Main pool is very good but its big clown above the slide can sometimes frighten little ones. With the Epcot resorts and the two parks, you are within walking distance to about 20 restaurants. All rooms were just recently refurbished and thus look like new. You have some entertainment on the walk at night, ESPN (no ressies) is a good place for quick order burgerrs and like food and watching sports, Big River Grill (also no ressies), for burgers, steak sandwiches and the like and local brewed draft beer. Flying Fish is a good upscale restaurant. Have not yet been in the other restaurant which recently replaced Spoodles (I am still in the denial stage because I really liked Spoodles). No counter service restaurants but can get some quick things in the bakery and its ice cream/sweat shop is very good. Best buffet around and one of best on site is Cape May at BC.