if you're short on extra time your costume is never going to get done and you'll end up quitting out of dissapointment with a lot of money sunk into the project. even if you buy armor off ebay, you're still going to need to trim, sand, prime, paint, re-paint, weather, etc. and that's just the armor. then there's your helmet, suit, gauntlets, and other accessories. i'm not trying to discourage you from your dream of mando goodness, i'm just trying to be realistic. cutting your own armor from a can takes a few hours, an evening at the most; by the time your costume is finished four or five extra hours is not all that much time spent. making a mando is a serious investment of time and money.