Hey Jim, I think I'd ride out to Crankshaft first if there is a question of snow/ice on that pass. If there is, you have enough fuel to get back. If you do a clockwise loop and can't get over the top to Crankshaft you probably won't have enough fuel to get back.
Be sure the safest rule is that we should not dare to live in any scene in which we dare not die. ~Lewis Carroll~