Nice; instead of burdening your boss with a decision, now you're burdening them with a ultimatum , with a deadline. I guess, as a manager, I wouldn't love anything more than a report saddling me with an arbitrary deadline, one I'd have to schedule along with the rest. One of my managers used to tell me this, instead: ask for forgiveness, not permission. That one seems way saner to me.
Management (in my opinion at least) is primarily for resource allocation, career growth, and shielding the team from endless meetings and acting as a point of contact for upper management