Have you looked at Duncan Hunter?
I'm actually still undecided. I'm somewhat pro Rudy because I believe he understands the WOT, though I may change my mind when the campaigns take off. Personally, I like Gingrich's mind, though I doubt he is electable.
All I am saying is that the Republican candidate will be more conservative than the Democrat candidate, especially regarding SC nominations. The SC has to stay as conservative as possible. This point is crucial and I believe too important to abstain from voting for "not conservative enough" candidates.
I will support a down the line, IMO nanny state, Christian fundamentalist, though I am not one, because I want the US to remain capitalist and conservative. I will not abstain because I'm more libertarian socially.