MFJ vs MFS in MI/CA/OR?

Hello,

 

My wife and I got married last year and had initially planned on filing MFJ through TT Online. However, after reading through some of the discussions here, I'm wondering if it is more beneficial to file federal MFJ and states MFS. Wife was a student and resident of Michigan (no income), while I was working in California (wages & investments). We then both moved to Oregon in September.

 

If MFJ, my assumption was that we would file part-time CA residents & part-time OR residents. However, since CA is a community property state, would that mean that if MFS, we'd have to split investment (non-wage) income 50/50 when filing as part-time resident MI (spouse) and part-time resident CA (me), considering we both lived in the respective states for most of the year?

 

Thanks in advance!