I got an email asking about the hike from Horseshoe Meadows to Mt Whitney. I thought I would put the request out for anyone to help with a reply. Thanks.
Here's what I received:
I'm looking forward to my Horseshoe Meadows to Whitney trip in July. I haven't found that much information on the route, so if you have any resources/advice, I would appreciate hearing about it.
As a first response, I'll link to this post, since it discusses the same hike:
Trip planning and weather