Though you hardly (if at all) need advice from me...
Great move, if you go with more than a mile remaining there will be a couple of chasers who might hold your wheel early, but just see how well they can pull through and judge when to drop them on the way to the finish. If they Really can't pull through, and you have some left > accerelate and drop them and just solo/tt in .... if there are other Pro P riders in the that break, it would be the normal matter of your teammate just grabbing any wheel that chases you...