While I think the answers to the first 2 questions responded to this one, I can add that our Creator Father Michael who created his universe with our Universe Mother Spirit, named the universe Nebadon. Christ is of the order of Michael Sons thus the title Christ Michael.
As for the name Jesus (Joshua). Gabriel instructed Mary to call her son "Joshua" which in english is "Jesus". What is important right now is our ascent towards him. As he is and always will be the way, the truth and the life.
Also, we are to think of Jesus as our Elder Brother, as he surely is, having lived his life here in the flesh as we are now, so he knows the feelings we have as he had them!!
119:0.6 The Michael Sons begin their work of universe organization with a full and just sympathy for the various orders of beings whom they have created.
The name Joshua
122:3.1 One evening about sundown, before Joseph had returned home, Gabriel appeared to Mary by the side of a low stone table and, after she had recovered her composure, said: "I come at the bidding of one who is my Master and whom you shall love and nurture. To you, Mary, I bring glad tidings when I announce that the conception within you is ordained by heaven, and that in due time you will become the mother of a son; you shall call him Joshua, and he shall inaugurate the kingdom of heaven on earth and among men.