Have you heard of a cake club called the Casanova?
http://www.cakeclub.com/
I haven't joined because I don't have my evenings free ever. It might be a bit of a drive since it's in Alexandria, VA.
There is a cake supply shop in Fairfax, VA called fran's cake and candy...
http://www.franscakeandcandysupplies.com/
Before they updated their web site they had a spot where you can sign up for classes. But I can't see it anymore so I don't know if they stopped offering classes or if they haven't had a chance to add it to their new web site. But it could be worth a call to ask...
Congratulations on your coming baby!!!