Being that you are going with a guide-outfitter, you might want to hold off and look at a few bucks until you find one you really want to take. Trophy bucks are like Beauty, it's in the eye of the beholder. Some like them wide, some high, some like them heavy, and others go for extra points. Myself, i like older bucks with large heavy frames no matter the points.
Usually, when you see a shooter buck, you will know it right off. Also, listen to your guide and ask him before hand what class of buck you should expect to find. Don't let him off too easy by shooting the first medium type buck he points to you, unless of coarse, you really like him too.
I have always thought that the best part of Mule deer hunting is the Hunt, being out in the Big Country, and looking at lots of deer in their environment. Unless a big monster shows up, the very last thing i want to do is shoot a buck on the first part of my hunt.
Joey
"It's all about knowing what your firearms practical limitations are and combining that with your own personal limitations!"