I've added alternate mickey ears these should print smoother orientation with the hole to build plate and supports should do the trick.
I added the option for shoes and legs to print separately. The shoes have a peg that fits within the leg for alignment. You should probably superglue legs to shoes for a solid hold.
I wanted to be able to see the home mini light up and acknowledge commands so why not let our child pick what he wants it to look like. He made a great choice.