How to make italian sausage, or at least try to

I'm trying making my own hot italian sausage again. I tried this before, a year or two ago, and they turned out ok, nothing to write home about, but this time I like the recipe better.

Recipes will vary, and spices will too. There are cajun sausages, linguicas, and so on. I remember a good fish sausage our grocery store used to make.

So, I bought a package of pork for carnitas and a package of beef for carne picada, and ventured to my cheapo food processor (it scared me for a while, didn't use if for a couple of years, the blades..). So now I have five pounds of ground meat...

The recipe I'm following -

http://cookingwithmichele.com/2011/03/homemade-italian-sausage/

I've read in the past that sausages need to be on the fatty side, but my grocery store packaged stuff doesn't have a fat estimate. So..... I may add some chicken fat, that I saved. That could confuse things, porky chicken flavored beef...

Well, the chile flakes will take care of some of the confusion.