You're talking about overturning Roe v. Wade. No pro-choice politician could or would support that.
I disagree. A pro-choice constitutionalist would do exactly that. If I were advising Rudy I'd tell him to proclaim that while he's personally pro-choice, it's a matter that should be decided at the state level. And as you noted, that is the functional equivalent of saying you opposed Roe v Wade on moral grounds.
As a pro-lifer, that stance would be good enough for me.