Archery Muley on BigHorn in Wyoming 2012

A few buddies and myself drew archery tags for Muley's this upcoming season.They only have one season 2010 under there belt so I am looking for some seasoned advice. I need to purchase such items as long range binoculars, day pack & boots. 10x50 good or do I need 10-22x50. Any suggestions on day pack under $150. What are the chances of snakes in early September because I need to purchase a new pair of snake boots for my local early bow season for White Tail hunting anyways. Any other suggestions would be greatly appreciated.