Don’t forget the possibility of a new party emerging at some point if the GOP cannot be fixed. Something along the lines of a Freedom or Liberty Party. A lot is gain from a name with a positive message in itself.
A third party to keep the other two in check seems like a great idea to me... I am done with Republican party, win or lose on Nov. 9th. Changing to Independent, I might come back if the party would come back to fiscal conservatism in the future, but the party wont support Trump and they have left me along time ago.