Can I ask, does Yamaha help you out (endorsed?) or does your relationship with people like Levon Helm influence your choice in drums (keeping in mind, I have no idea what drums Helm plays). It just seems odd that a young player like you would like Yamaha, because its not a trendy flashy brand. You must have good taste, hehe!
My 9 year old is interested in drumming, and pretty good, but he doesn't seem to share your enthusiasm and discipline for drumming. I suspect you have a rare talent indeed.