Shell, are you planning on grinding your own, as Phil suggests? If not, don't frustrate yourself.
For sausage you want to work through the medium to course blades on your grinder. Commercial ground turkey has gone through the fine blade, is won't work. It's more of a forcemeat than a sausage.
Adding insult to injury, you'll then have to overwork it as you try and mix in the herbs and spices.
For any sausage, best results are obtained by spreading the herbs/spices on the chunks of meat before they go through the grinder. Then grind it. This assures that the spice mixture is evenly distributed.
For sausage you also needs small pieces of fat. Again, that's why you use the medium or coarse blades, so that the fat isn't chopped too small.
There are several good books available on sausage making. I recommend you read one of them before embarking on the facinating voyage that sausage-making can be.