Powdered Goat Milk in Bread?
I haven't used goat milk in my baking because I don't like the taste of goats milk. I suspect it would be a good idea for you to taste goats milk first to see if you like it if you haven't already. Other than that, there's no reason to not use it.

As far as fat content goes, I only use full-fat dairy in my bread. No adjustments to the recipe are needed.