I did ths last fall in two days. I'm pretty sure it could be done in a helluva long day though. Take Longs Pass trail over Longs Pass, and drop down to Ingalls Creek. Cross creek to Ingalls Creek Trail and go right about a mile to the Beverly-Turnpike Trail junction, 4,700’. Leave the trail and ascend rightward across the meadow to where the slope begins to steepen at about 5,000’. Cross the stream and ascend the ridge, staying left of the crest. Around 5,800' traverse right, cross over the ridge and contour into the basin. Great camp available at 6,200’. From 6,200', ascend talus/snow to Sherpa/Stuart col and aim for the notch nearst Sherpa.