Ok, so, I've settled on two different bikes to work with. Either A Specialized Sirrus, or, a Trek FX 7.whatever. I found a few Sirruses on CL and I'm not sure which would be a good deal... Here they are:
http://seattle.craigslist.org/see/bik/2902774105.html
http://seattle.craigslist.org/see/bik/2910957297.html
Also, here's a trek 7.3 fx:
http://seattle.craigslist.org/see/bik/2900694436.html

Any help would be appreciated!