Cambo, the mojo is a 10 in terms of ease of build. I had mine framed up in about 8hrs taking my time. Nothing flies like a mojo, you owe it to yourself to try one and see what all the hype is about. Mine weighs 4lb 1oz with a TTpro .46 and mousse can pipe-it has insane power!! It flies even better than everyone said it would.