wow Zandit very nice looking axe. It is possible you could use a bolt on neck and screw into a central frame. But a neck through would probably preferable to have maximum strength.
As for bending the outside shape of the body I would look at outsourcing that to an acoustic builder as you need alot of equipment/jigs to bend it into shape.
It is hard to see in the dark photo but I am assuming its just a outside frame and no bracing ?