http://hunting-washington.com/smf/index.php/topic,178213.25.htmlThis thread shows you what a 170" deer looks like, some of them are mid to high 160" deer. Like I said above that is the range I think you are in, 165-175", I am buy no means an expert at judging 180 deer in velvet. There is also a thread on 180" deer, I just don't see that this one is in that category. If you compare your photos to the ones in the 170" thread I think you will see they are very similar.
Once you get over 160" slight increases really add up. 1" longer tines each with a little more mass give you 10" more, that is tough to pick up from your photos and for the average guy to see.
I think most will agree that you have a shooter on your hands if you can find him next month.
Good luck, I hope you get him.