Sorry I didn't reply before you hiked. Please tell us how you did.
Your planning sounds good. Bridgeport is a beautiful place to visit. Heading over Sonora pass gets you over without worrying about Yosemite entry permits. Mt Dana is a great preparation hike!
Horseshoe and Whitney Portal walk-in camp sites are both one-night only. You should be able to get a spot any day, no permit required.
Timing: looks good. Whitney is twice the climb of Mt Dana, so doing Dana first should give you an idea of the time you will need.
Water: 4-5 liters from Trail Camp sounds pretty heavy! Also, hide one at Trail Crest, and pick it up on the way back. No need to carry it all the way up to the summit, and half way back.
Acclimation: Looks good. 2 days rest after Dana would be best.
I am curious how your hike went!
