Your approach will work. You will need to be careful doing the input to allocate ALL income (not just wages) to the portion of the year in each state, using Ctrl + E and splitting those items. 

MFS does not seem to cure any ills. It will incur costs for more returns and may generate a higher federal tax. You will need to play with all possibilities. Make the TP SSN all 9's to do the "play" returns and you will not incur REP fees. I would wait for the next release before committing too much time to the process.