Regarding the Best View of Everest; you will visit the most popular peak Kalapathar (5,550m) is the best place and another point is the fifth lake at Gokyo. As you are curious to see Amadablam in best view Tangbuche and Dingbuche are a good place. But for the different view of Amadablam Nangkar Tshang Peak (5,615m) is perfect which is 2 hours walking distance from Dingboche. It is possible to use Drones in either place, for this you need to have to get special permission from the related Department of Nepal Government, aviation authority, or local authority. We are glad to organize for you.