You can book part of a stay in a Concierge room and part in a Savanna View room but you will have to change rooms. All of AKV's Concierge rooms are on the 6th floor, just steps from the lounge. All of the Savanna View rooms in Jambo House are on the 5th floor. Unlike staying at AKL (the hotel), you don't have the option to book CL but stay on a different floor.
If you want to do the Sunrise Safari, you must be staying CL the night before the safari. Last I knew, the Sunrise Safari was offered on Sunday and Thursday morning so assuming that is still the case, you would need a CL reservation for either Saturday or Wednesday night. I have read that some people who were checking in on either a Sunday or a Wednesday have managed to book the Sunrise Safari on their check-in day but this seems to be allowed on a case-by-case basis.