Best advice I could give ya is DON'T CALL early!
Calling is entirely over-rated and don't think for a minute that it works like you've seen it in some videos on incredible ranches and dream properties. most of the time when you call you only give the mature animals reason to circle your location downwind and bust you without you ever even realizing that a mature deer was in your area. Calling works best when you can actually observe the animal and read it's body language as you call. Callings also works much better during the bredding and chase phases. Calling in the early season is risky at best. Good luck and good huntin'