You might also want to consider spending the night of the 25th or the day of the 26th at Horseshoe Meadows. It is approx. 30 minute drive from the portal, and is the trail head for for several day hikes. It is also higher than the portal, so might help with your acclimatization. See: http://www.summitpost.org/horseshoe-meadow/638467 for more information.

If you go as far as Yosemite/Mt. Dana you could also consider Saddlebag Lake (between Mono Lake, and Yosemite Park entrance). For more info see: http://www.summitpost.org/saddlebag-lake-loop-trail/645638

Great that you have an extra 4 or 5 days to explore.
Enjoy

Last edited by John Sims; 03/31/14 12:26 PM.