"Such readiness" refers to someone being prepared or willing to do something, often in a prompt or efficient manner. It implies a high level of preparedness or eagerness to take action. Full definition
Without such readiness, the mind can't prepare the body to thrive. (mindbodygreen.com)
And yet not even the foremost professional theatrical producer has ever had all in such readiness for the stage and for the change of scenes, as eternity has all in readiness for time: all — even to the least detail, even to the most insignificant word that is spoken; has all in readiness in each instant — although eternity delays. (religion-online.org)
While the ELA and content area literacy components described herein are critical to college and career readiness, they do not define the whole of such readiness. (corestandards.org)