Hi Ryan,
If you are willing to schlep to Grand Rapids, I'd recommend Kyoseikan dojo. I've done seminars there and they're nice people.
http://www.wmaikido.com/
For closer to Kzoo, I'd suggest trying the local YMCA and whatever colleges are near you.
The forums here say that in 2003 the local Y offered aikido. dunno if this is still the case:
http://www.aikiweb.com/forums/showthread.php?t=3099
Community colleges, and larger 4-year universities often have aikido classes as part of their curriculum.
Try Western Michigan University, Kalamazoo Valley Community College, Kalamzoo College...
A quick google search brings up the following dojos. A lot of these seem to be multiple arts dojos, so aikido, bjj, tai chi, etc. Also, I have no clue what school of aikido they teach, if that matters to you one way or another.
http://www.southsidedojo.com/
http://members.tripod.com/~AIM_Seiwa_Dojo/index.html
http://www.toyodacenter.com/
Good luck! Where are you moving from, if I may ask? Within Michigan? From another state?