Rob,
I recommend you follow the 7-Day Mountain Bike Stage Race – Personal Record Plan if your plan is to train hard and race as fast as you can. I recommend you follow the
7-Day Mountain Bike Stage Race – Finishers Plan if your goal is to comfortably complete the stage race at a happy smile pace. Just finishing Breck Epic is still a challenge!
The best precursor plan depends on your choice of the above. Let me know and I can recommend the best plan.
Fitting in your training into commuting is great. If you do need to ride overtime you are correct – just make the extra time easy spinning.
Lynda