As for Crescent Meadow: Seriously, I'd stay clear of anything that far south. I just think you would be disappointed due to too much smoke.
Out of Kings Canyon, you could be over Forester in 2 long days. Three more days to exit Whitney Portal. But then you have the transportation shuttle issues.
The 40-mile Rae Lakes Loop, out of Roads End in Kings Canyon might be the ticket. Probably tough to get permits over the long weekend, though. I'd call and ask about walk-ins and no-shows.
