DVC deluxe studio savannah view (non club) will be on the 5th floor and you'll be on Kudu or Zebra trail.
Regarding Wanyama, I would not risk a 1:20 airport arrival. You meet at Jiko at 3:30, so you have 2 hours to deplane, take the faux monorail to the terminal and make your way down to DME in B terminal. Then you may wait for your DME bus or wait to leave the airport, then your bus could stop at 2 or more resorts to unload people before they reach AKL. All of that assumes your flight is on time, and doesn't have to wait for a gate to let you deplane, etc.. The Wanyama Safari costs so much, I wouldn't risk scheduling it for arrival day when flying.
I do like doing Wanyama early in my stay because I learn some of the stories about the animals that I'll be seeing for the rest of my vacation and feel like I 'know' them, especially the ones that become regulars near my balcony.