I think that would be hard to say because I would personally try to match the armor to your specific body. Best thing to do wear the suit, attach the mock up armor, take a pic and adjust the size as needed. That is what I had to do.
My armor had the proper length but was way too wide for my body so I trimmed it to size and now it's much more proportionate to my body.
Take one set of armor... have one person wear it who is 6'1" then let another person wear the same set who is 5'4", see what I mean?
Otherwise what you are doing is a good idea with the mock up armor.. I didn't have that and had to use my only set!
