Should we add a round at Salish Cliff?
j/k...
We would be passing the Home Course to and from a Tacoma base camp on the way to Salish, so I don't see why you couldn't do both in the same day.
For those who don't know, the Home Course was the second course, along with Chambers Bay, used as venues for the US Amateur in 2010, and it will be hosting the US Women's Am Pub Links in 2014.
I haven't played Salish yet, playing in July, but have heard good things since it was redesigned. Golf Digest has it ranked 6th in state (sorry for quoting a ranking.)
Doing a 36 hole ride on each side of a 18 hole Chambers walk is do-able in my book.
I would think the following would not be difficult to arrange or manage physically:
Sat - morning at Home Course and afternoon at Salish
Sun - Chambers
Mon - 36 at Olympic at Gold Mtn.