Nope, no need to. I recently acquired an old POS BMW (the kind those tools like to use for rally racing) that will work to get me as far as I can and if/when I have to ditch it for some reason (out of fuel or otherwise disabled, road block, whatever) I certainly won't miss it.
I keep my BOB ready to go, and I pack differently than some folks here so its pretty lightweight... light enough that I can, and have, carry it over very long distances. Its also pretty compact, which is nice.
As for experience, I worked as a trail guide for a while and am more familiar with more parts of the Rockies than I am in downtown Denver. I've covered the Colorado Trail down and back with a pack very similar to my BOB, which is why I'm confident about my gear and ability.
So, I should be fine
Also, I only have to worry about this for another 3 months. After that I will be in Uncle Sam's possession and at the disposal of the Army.