I'll see if I can make the 17th work.
I know Kirchhayn's is around that area, that have a pretty big yard but prices aren't the best. Went there once when I lived in Milwaukee. Dunno how the Focus selection is though, I was looking for Saturn parts at the time.
Mine: 2004 Subaru WRX Wagon: 116k, WRB
Gone: 2002 SVT, #1654
Hers: 2012 Focus Ti Sedan: 67k, SGM, Manual