Good luck and best wishes for your continuing success in 2010. I can tell from your post that you are set to make 2010 one of the best years of your life.
As you mentioned, you may have to remember patience during your training. All the "easy" improvement have been coming with your weight loss and the exhilaration of being able to move so much more easily.
Soon, you will have to discover the concept of "focus" and start setting specific targets on some of your rides.
Plans are good, but for some one who is still in the process of weight loss - I advise "big picture" riding style.
For you, this means - remembering that every workout can't be a back breaker. You should use a "hard/easy" day approach. If you want to continue to improve, you should measure or "log" all your training - and increase your "all out" efforts in increments.