One of the big advantages of a BP/W set up is the hogarthian harness, which lacks padding (not needed and actually less comfortable underwater, and buoyant) and the truly dumb idea of the underwater cumberbund.
I would just forget the ultralight fabric "plate" and get a standard AL rigid plate. You don't need the 'extreme' version of the wing, just the 18 lb machV, hogarthian harness, AL plate, two cambands, and you have an ideal warm water set up that will dive beautifully and be extremely compact to travel with. I would also get four xscuba camband pockets; one on each camband, two on the waist belt. That way you can put weight wherever you want it to adjust your trim.
IMO, much of the emphasis on lightweight diving gear for travel is way over blown. I recently travelled by air carrying full set ups for double and single tanks and had no problem staying under the weight requirement for the airline. My bag had 3 regs (3 1sts, 4 2nds, 2 SPGs, 5 ft and 7ft hoses) 2 wings, 1 AL BP, 2 masks, 2 wetsuits, 1 pair fins, 1 computer, 3 lights, etc. I save weight by packing everything in a lightweight duffle rather than a 10-15 lb suitcase.
Choose dive gear based on how it performs while diving!
