Private room near Libertyville, <$15/head?

Any suggestions on a casual, but nice place to have a wedding rehearsal dinner in the Libertyville/Grayslake area? I need a private room that will fit about 80 people, and can feed them for no more than $15/head. Buffets are fine, and I'd prefer not to do anything BBQ, since that's what we're serving at the wedding.

So far, I've looked at (online) Austin's Saloon & Eatery, who does an all-you-can-eat pizza for $9/head. I'm just leery of pizza from a bar- anyone been there? The other possibility is Jimmy's Charhouse- they do an hors d'oeuvres-only thing for $11/head. I'm not sure if people expect more of a meal than hors d'oeurves, though. At least I know the food is decent at Jimmy's Charhouse, though.

Any other ideas?