Nice buck!
What is the likelyhood of you being able to find him again when the season opens in a few weeks? Have you seen him on more than one occassion? I think that if you can keep tabs on him over the next two weeks, you'd have a great chance at him with the bow. But on the other hand, if you just show up out there opening day and expect to locate him again, I'd say good luck! Either way, for a general season deer in Idaho, that buck is about as good as you can expect! I'd go after him in a heartbeat!
Best of luck! Tell us more! I wish I could hunt the early season, but I will have to find my buck in the late hunts come Nov and Dec.