I'm thinking of foregoing the resupply at Sonora Pass and planning on eight days of hiking between Tuolumne and Echo Lake which is about 19 miles per day on average. On most parts of the trail, I wouldn't think anything about a 19mpd pace but I was originally planning on ten days for this stretch due to my perceived need to keep miles per day down in the Sierra. I'm thinking that if I plan on eight days and everything is going according to plan by Sonora Pass, I would just keep on going. If it is taking longer than expected, I would hitch down to Kennedy Meadows North, where I assume that I could put together an extra day of food if necessary even though the store there is supposed to not be great for hiker resupply.
I do have a couple of other eight day food carries in the Sierra but with lower miles per day, such as plans for 8 days between Onion Valley and Mammoth. That is 125 miles rather than 150, but it covers much more difficult terrain, so maybe it is a wash in terms of difficulty.