In answer to your questions, they're hiring onto all three certificates, apparently with the most aggression onto Republic. It seems they're sticking a lot of their more qualified candidates (like you) onto the Shuttle America certificate. So yes, you qualify for the 170. A more realistic number that I've heard from RAH is more like 700 pilots in the next year. That's one of the more conservative estimates I've heard, so I hope BB has something big he's working on.
Wouldn't you rather keep flying the Mighty Beech for GLA? I'm sure we're opening that ORD base reeeall soon.