I haven't stayed Savannah view, so I can't speak to how amazing it may be to have animals right outside your balcony, but I can say that I never felt deprived of animal viewing locations while staying in a standard room at Kidani.
It sounds like you'll mainly be in the room for sleeping, not necessarily hanging out for hours on the balcony animal-watching. You have plenty if opportunities to see the Savannah just walking to the lobby or bus, and there are outdoor viewing spots off the lobby also.
Not saying a Savannah view isn't "worth it," per se, but I wouldn't worry about missing out too much.