Tanzania

Hello! We're leaving shortly to spend 3 weeks in Tanzania. We're booking a 6 days safari in the northern parks (Serengeti, Ngorongoro, Tarangire, Lake Manyara). We're giving up climbing the Kili as we're not that fit and we heard that's quite hard... We want to go to Zanzibar, but two weeks there are probably too long. What about the Usambara Mountain? Or Pemba? Can you help us planning a nice itinerary for our journey, please?
Thanks a lot!

I have not been to neither Kilimanjaro, Usambara nor Pemba but a former collegue of mine climbed the Kilimanjaro at her 50th anniversary, and she claimed it was not tough at all. I have been on Zanzibar though, and I would not say that two weeks are to much on the island. I was only one week there myself, but that was because I had to catch a "dhow" to Mombasa.