Good for you. You'll have a blast. It's quite a sight to see that many herps crammed into one room, and usually the breeders are great to talk to - just a wealth of information to be had. Smulkin and I are a bit far from Michigan, so we won't be making that one - unfortunately.
We've been to the show in Pittsburgh and one in Manassas, Va. We're probably going to the one in Columbus in June. You can find very healthy and reasonable priced snakes at expos.
Not to mention that its a great place to learn how to handle your snake once you get him. And also exposes you to other herps you maybe interested in. Have fun!!