As said before rider ability is more than 1/2 of it allowing one to make it all the way to Deadhorse. As far as fuel, the Coldfoot to Deadhorse stretch is around 260 miles+-, so you NEED to plan accordingly and have spare fuel to boot just for unforseen stops or delays. Like Marc mentioned, just plan for D2D 2013 as a warm up run
I;m sure you will be able to find a riding partner for Deadhorse in the crowd. Going solo MIGHT not be the best choice.