Check out University of Michigan Flyers.
http://www.uofmflyers.org/
I think they used to be the flight department at U of M but have seperated from the university and are no longer officially connected with them.
Last I checked, they pay extremely well. ... like 40-60/hr well.
They also have very nice late model planes.
Check em out.
Also, if your looking for some extra time here and there, you might want to check out
www.skydivetecumseh.com
I used to fly the Twin Otter for them,...I think now they have a caravan and a C182. They are about 25 min from Ann Arbor.
Good luck