What's your temp. situation? If it's good.....why not give him more time??? What's to lose? I'm just going off "gut" here.....but I'd leave myself 2-3 hours of daylight.....(whatever time that is for you) and go, then (assuming tmeps were right). If he's gutshot.....he needs all of that.

If temps are REAL good.....I might wait until much later.