Sierra High Route, some or all, this late Aug. or Sept. This is an off-trail alternative to the JMT, sees far fewer people (and bears) and a lot of variations are possible. I've done this before, in the early 90's not in best UL style, taking 3 weeks, which is fast considering the terrain. This time around, from Twin Lakes (NE Yosemite boundary country) to Lodgepole in Seqouia NP or Cedar Grove in King's Cyn. ( if I decide to do the entire route) in 2 weeks ( w/ layovers and one resupply) w/ a UL load yet to be determined.
Scott-- I've done Grizzly to Papoose. Heli? Hope you still have to do the infamous 1600 ft climb in a mi. followed by the 1600 drop to Grizzly Ck. on the China Spr. Trail ( that will grow hair on your chest).
Then the scramble alongside Grizzly Falls up to the Lake. Some terrific country.