If you guys can make an out-of-con bazaar work, please let me (and everyone else) know? I've seen it done up here in Seattle (Tacoma, actually) in years past and it was a LOT of fun. It combined all the best parts of artists' alley, and to some extent the con as a whole, all in one night. It'd be more than worth driving down from Seattle for.
Suggestion: Churches, American Legions, community centers, etc might be a great start... if you charge $5 admission to visitors and $20 per table to sellers, hopefully you'd be able to make up the hall rental with that alone.