Different peppers affect different areas of the tongue so I always use several different peppers so as not to overload one spot, this also helps to give an immediate shot of heat with a nice finish of heat. For 10 pounds I go with 2 Tbl fine black, 2 tsp cayenne, and 2 tsp red pepper flakes. Keep in mind, heat values differ widely with different bands of spices. Supermarket stuff is almost always old and mellow. Where are you getting your spices and herbs? Are you using chopped or ground sage? Penzeys is good but pricey. I use MountHope Wholesale out of Cottonwood Az. A quick and east way to test before stuffing or patty making is to take 1/4 cup of you mix, put it in some plastic film, twist it and give it a quick boil that way you can adjust your mixture.