In my 3 experiences driving from back east to hunt antelope and deer in Wyoming, you need 1 hunting day for each antelope buck, and a half day for each doe, in a group of 3-4 people. Deer are highly variable, and you may or not see them in the same areas. I'd alot 3-5 days for your deer tag, depending on how hard you want to hunt and your standards for size and maturity. 9 hunting days should give you some cushion. Split up for the deer hunting.