When I did Whitney in June I had the exact same 4 day plan, but the winds were so bad (70 MPH+) at Trail Camp, I decided to make a 3-day trip. 1 Night Outpost, 1 night Trail Camp, and then I left my heavy gear under some rocks and Trail Camp, along with my canister, summited, packed up at Trail Camp and marched out to the Trailhead. I would recommend doing that, OR spending the last night a Outpost. Take down your tent if you decide to stay at Trail Camp, my tent poles snapped there...
