Your plan is a good one if you can handle it. IF you camp away from water and the trail, don’t sleep where you eat, and keep your smellier things in the bear vault, you can get away with keeping a few things in your food sack the first couple days out of Kennedy Meadows. After that though, you really gotta keep everything in the vault. More aggressive bears the further north you get towards the national parks.
If you don’t want that plan though, the side trail over Kearsarge Pass towards Independence is REALLY beautiful. Everybody i knew hitchhiked from the trailhead…no road walking…though the hitch might take a little while. Mail food to Independence post office, or hitch further to pretty nice Bishop that has everything.
markv