well, I'm just under 6 foot, and about 230 lbs, I can almost pull off a 2-piece. Same with Kel T, from Scotland. gauge your body size against us, mentally add your armor bulk, you should be able to gauge it. Also, I wouldn't worry too much about getting a 2-piece if you can't use it. There are enough people here looking into them that you will be able to unload it fairly easily. When you get it, just snap it together quickly, throw on your kit, and send us a pic.