You need to first determine the domicile of the spouse and your client because that will drive everything else.

On what basis do you consider the spouse to be a nonresident of WA?  It is more likely that he falls within the statutory definition of tax resident (which doesn't go by day count).  Even if he continues to be a CA domicile doesn't automatically mean that he will be nonresident of another state.

In terms of allocation on the return, going back to the points I raised in my initial response, you really need to first figure out the domicile status of both spouses, the residency positions, and the optimal filing status.  We can go back to discussing the input and mechanics afterward.