I'd leave the top age at 70 but instead of being able to draw benefits at age 62, I set it at 65. Instead of three age points (62, 65, and 70), there would just be two. Not being an actuary, I can't say how much difference that would make but it's a starting point.
I'm not a fan of any of the Republican candidates, but just as Obama is not wholly perfect, they are not wholly imperfect.
I've worked in Head Start in three states. It's the first program I'd cut. Could it replaced with something effective? Sure and I hope that would happen but it's a horribly ineffective system, at least where I've lived.