Firstly, the clicker will not spook game. There are plenty of ways to quite them down so you simply feel the click rather than hear it. As far as shooting at further distances, ,,, this is where I see the most improvement in my shooting with a clicker. The consistent draw length really helps me after about 25 yards.
If you do choose to shoot a clicker, remember to use your back or rear deltoid (shoulder) muscles, as tension in the forearm or fingers to achieve the "click" with greatly hinder accuracy.
Good luck!