While this is an awesome idea, just a heads-up, you might want to check eBay and Amazon. A couple of years back I browsed through and managed to complete the ones I'd lost or misplaced for whatever reason really cheaply, through a couple of different purchases. Had a couple of doubles/surpluses left over to donate to the library, but you can actually buy the issues fairly cheap. At least when I was looking, shouldn't be any different now I guess. Might save you some meticulous effort and such, with the trading and posting and all.