I don't think you will have much choice in the build. I talked to Dave Ehrig about the class at Dixon's last summer, and I believe they use a Lancaster style rifle kit with a precarved stock. I did see on their site that you can let them know if you're a lefty, but I don't think there will be much variation as far as style, parts, etc.
I can understand wanting everyone working on the same thing....would be like herding cats if all the students had something different, lol.
I'm pretty sure I'll be enrolling for the fall. The only thing that makes me hesitate is knowing I'm going to be away two consecutive weekends in October. That might be an issue.