Rank the potential GOP candidates by low, medium, high risk and reward

[Suburbia]

Which candidate would be a low-risk, low-reward choice for the GOP and which candidate would be the highest risk, but with the highest reward? Who would be medium?

[Suburbia]

low risk, low reward: Jeb Bush, Bobby Jindal
high risk, high reward: Rand Paul, Chris Christie

in between: Marco Rubio, Mike Pence, Mike Huckabee, Paul Ryan, Scott Walker

Candidates who need the Democratic Party to self destruct to have any chance: Ted Cruz, Rick Santorum, Rick Perry

IMO if I were a Republican, I'd go for one of the high risk candidates as they are likely the only ones who might be able to expand the current coalition in any way.

I would see Jindal as medium risk, medium reward.