Request "close to lobby." That puts you on Sunset Savanna, the largest savanna which has giraffes, gives excellent views, and puts you close to restaurant, store, pool, community hall, and bus stop. You may also consider requesting "lower floor" to give you a more direct sight line to animals but make sure close to lobby is top request.
The risk at Kadani is getting room far from lobby and walk from lobby to end rooms on the wings is the longest walk down an internal hallway that exists in any hotel in the world (and by world I mean the earth not just WDW).
Personal view is that Sanaa is one of the best table service restaurants in WDW. Boma is decent buffet but, on another personal view, since they started giving free dining as part of Disney vacation packages, it has gone from being probably the best buffet on site to good but not great because it has gone cheap on a number of the dishes.