I am thinking of a safari starting in Arusha and visiting Tarangire, Ngorongoro conservancy, Serengeti and would also like to include the Olare Orok Covservancy in Masai Mara and also would like to see crocs at the river. I am considering going in Oct/Nov. Any opinions on that? We don't have a time limit. I was think 12-14 days. Too long?? Not long enough?? I want to have an occasional "down" day to just relax and soak it all in. Can we use Arusha operator/driver and go into Kenya? Then plan to fly to Zanzibar from Serengeti to end with a little R&R. So excited to go. And thank you to everyone who posts about their trips. It is so much fun to read and makes the planning really exciting.