I can at least advise on the armor portions, I'm not sewing heavy at all.
The armor shouldn't be too bad actually, just need to be able to break it down to simpler shapes. The arms pieces can be broken down into 3 to 4 pieces each arm, as well as the leg piece. For the armor bits I'm sure that sintra (expanded PVC foam) is ideal for durability and shaping ability. I've written several tutorials on armor making with plastic that goes in depth, but this costume is definitely within the realm of possibility!
If you plan to commission it from someone I'd be prepared to pay a good chunk of money for it since a lot of it is very form fitting and, while not difficult, the armor work on this would be very time consuming.