Do you honestly believe that the GOP is a conservative only party? If so why? I agree with you in that if that is what you are after then the GOP isn't your political home...
I also think you and the other 'its me and my beliefs or nothing else' group are destined to be regulated to the fringes of the political arena. Your group has little to no chance of electing a single person to the presidency or other national or in most cases statewide offices.
However you may well elect members of your group to local and county wide offices. That is the place to start in order to reach a national level. JMO.
Good point