Jeb Bush & Michael Reagan....they can recycle those old "Reagan Bush" stickers.
I don't know if anyone on your list has the "stones" to be President. If we are pooling from the Senate for the nominee, then Tom Coburn beats them all by a longshot!
Guiliani is my top choice amongst those that have a better chance. I like Tom Coburn a lot along with Pence and Tancredo. They are a few of the "real" Republicans worth their salt. I agree Gingrich has too much baggage.
Condi hasn't won a race as anything, so her ability to debate or get elected is questionable. I think she is a bright and talented woman in her niche, but would be over her head in being President. Like someone might be a brilliant scientist but would fare poorly trying to be the company's CEO.