Congratulations. What unit will you be hunting? Elk/Deer hunting is my passion, this will be my first year hunting turkey. Will you be hunting from a base camp or backpacking in?
I am very fond of my Sitka Timberlines. The past few years its been above average temperatures, here in CO, during all the gun seasons. In warmer temps sometimes I will use my Sitka Mountain pants that are usually reserved for archery season. If I had only to choose one pair it would be the Timberlines.
Add a base layer and in all but the coldest of temps these will be plenty warm, even when sitting and glassing. If you plan on glassing for extended periods of time, a good outer insulation like the First Lite Uncompagre pants or Sitka Kevins can be worn over top. Personally, I carry a Kifaru Woobie in my backpack if the weather is super cold, windy and or snowy, I can wrap up in it while sitting and glassing.
I don't usually pack rain pants but those can be used for an extra outer layer too and provide another layer of warmth. Durability or noise is not an issue if you're just sitting and glassing.