If you're buying NOW, I would say that the 11" Pro might be worth it based on the fact that they're giving Air Pods away for free. Whether or not you need the Air Pods is up to you. If not, sell it and recuperate the cost. If you can sell them for $100, then a $599 Air vs $699 Pro seems like a much better comparison.
In that scenario, I would personally easily go with the Pro for the higher base storage, more RAM (assuming AIR has 4GN or less), Promotion, Brighter screen (600 vs 500 nits), Quad speakers, and better front/rear cameras - unless you desperately need Blue or Green. The speed differences from the chips, at this point, is negligible in day to day usage.
If we're comparing the 256GB models for both, well, then it's a wash in the park.