Ive been in a similar situation. I bought a 137 L board to learn waterstarting and other shortboard sailing basics. I live in Oregon and mostly sail the gorge, where a 90-100 L board is considered lar ...
I had a great experience at Floras Lake Windsurfing near Bandon, OR. Check out their web site at http://www.floraslake.com. The B&B there is really nice, too.