I personally think F.O.C. in underrated. If your FOC is low, then you better have everything else perfect. If you want a little forgiveness in your setup, then get the number high. It will not only help with arrow flight, it will give you better flight in wind and where you may hit grass or small twigs. This is especially important when shooting 60-70 yards.

At that distance you're going to use a rangefinder, so speed is not important. Arrow flight is everything, and with broadheads, high FOC is like an insurance policy, just in case something isn't perfect.

Keep in mind, if you raise tip weight your arrow may quickly become underspined. These decisions are best made before you purchase your arrows.

Good luck!