Wait till Spring? Unless you Wife has liquidated damages on the project completion date
like mine usually does.
I can't imagine your flatwork and footings would be worth a sh*t if you poured in freezing temps anyway. No comparison to municipal projects by the way, they're using air-entrained, high strength blends with additives that tolerate a wider array of pour conditions.
What you're contractor is likely to pour for residential work is a totally different blend.