Any backplate/wing will work.
Mine from www.deepseasupply.com
came in a tiny box in the mail that weighed 9lbs. (The backplate itself is 6lbs, you can buy different ones from DSS that are 2-3lbs).
The whole thing came in a box that was 14.5"x16.5"x5". I'd be hardpressed to get it compacted down to that again but it's doable.
You're probably looking at $550 though.