Personally, I've always been of the opinion that we first ought to kick the Left to the curb, THEN dismantle things, but that's just me.
I say we take them both at the same time. Go for the easy wins first and build momentum and political capital. One example is bilingual education, because there's a broad consensus against it.
An issue like abortion is a different matter. I'd love to see all 50 states go pro-life, but there's no consensus as yet... it needs building. So we can hold the line on abortion at the margins, and push back for smaller victories here and there. There's a consensus supporting parental notification, for example.
What galls me though, is the GOP tendency to compromise first and ask questions later. Almost as bad is Republican willingness to trust Democrats on a handshake.