Well after doing quite a bit of reading I believe I will not be able to accomplish what I want with what I have. I was browsing the archives of Nuts and Volts and came across the column by Scott Edwards entitled Nifty Networking Chip Link Stamps Far and Wide. It this article Scott shows you how to through together and RS485 network with very minimal parts. There are only 5 parts needed in this setup, a 120 ohm, 1K and 10K resistors, 0.1uF decoupling capacitor and the Linear Technology's LTC1487. This little device appears to fit the bill for exactly what I'm looking for. Suppose to be able transmit up to 2000 ft according to the spec sheet anyways. That is way further than I would ever need to go so this in theory should work fantastic. I will post my results when I get the parts in from DigiKey in the next couple of day.