Requests are not guaranteed. They are met in order given, thus if Sunset savanna view is lead request, they will try to meet it first. A request for Sunset savanna has a high chance of being met at Kidani because more than 80% of the savanna view rooms overlook Sunset.
Beginning 60 days out, you can do check-in online if you have set the reservation up in My Disney Exoerience (that can be done once you have the reservation number). One part of that online check-in is to give you location request options you can check. Be aware that if you have made a request through Member Servcies (MS) via a member for a location, you should do nothing on that page for making location requests when doing online check-in because doing so will wipe out any previous request put in by MS.
If you are considering a second request, avoid "close to lobby." That is the request most made by guests with the result that many do not get it and often end up as far from the lobby as one can possibly be. A "third floor" request is also one to reconsider. There are five floors -- ground floor where there are no rooms but instead the under-building parking garage, and second through fifth floor which have rooms. It is better to just request "lower floor" (meaning 2d or 3d), or "higher floor" (meaning 4th or 5th).
Personally I would not make more than two requests with Sunset as the first one and the seocnd one trying for a location that is within striking distance of lobby, either "near the Rafiki elevator" (down that elevator to ground floor gives you shortest walk from building to an entry to the pool), or "near the Timon elevator" (which puts you close to the the doorway that leads directly to the bus stop).