For the moment, there's some attachement at the bottom of the page with some great info on factors to consider, planning and doing the End to End, as well as other 2 week (odd) rides.

MASTERPLAN (download)

• Introduction: Stop dreaming, start planning
• Planning: when to do it and how long to take; sorting your bike and kit; physical (and mental) preparation; what to expect on the trip
• suggested route; to and from the Ends; maps and getting lost
• where to stay; contact numbers and more
• sponsorship tips