Sounds reasonable. You must have some talent or you wouldn't be looking to do 15 hour weeks.

My advice would be to buy Friel's Cyclist's Training Bible. It's a good start at figuring out a periodized training plan that would work for you. At least it teaches you how to develop such a plan. If you are going to race, you will have expenses. One of those might as well be a book or two.

If you want to skip the book learning, I'd start that internet program 13 weeks before your first race in April. Between now than then, just ride lots. Do one 6 hour ride on the weekend if the weather allows. After that first race, back off the training program and just race and ride as much as you can without hurting your race performance.

Be very careful not to overtrain. That's what most new self-coached riders do the first season or two. They do that because they don't yet know what overtraining feels like and think if they are going slower, they need to train more, when the real answer is to train less. So if you feel you are slower than you were last week, you need to take it easy for a few days. Ride, but ride easy until the hills feel easy again.

During the season, if there's not a race during a week, you'll need to do a race simulation ride. Most folks can race twice a week without overdoing it.

I've found a heart rate monitor that records data and can download it into your computer to be a very valuable aid for the self-coached. You can keep close track of time-in-zone and watch your heart rate on familiar climbs to evaluate your training state. Again, trying not to overtrain.