Hey Mike, good luck hunting this morning and good luck finding your buck.
I was involved in the tracking of a big mature buck with a one lung shot bow shot that ended successful. They can and will travel a ways with that one good lung but it sounds like you'll find him this midmorning.
Keep us posted!! I'll be working when you find him! Yep working and living vicariously through you!!! However, I'll be in the Dallas County woods before daylight in the morning. I just upgraded my son's rifle from a 243 to a 7mm-08 yesterday so I need to get my little man his first buck this weekend.