If you don't like heavy scents, I would use 2 oz.
This is a really easy recipe to soap, just do not discount your water much because it gets really hard!
I'm not a milk soap expert. But here is what I do for my milk soaps. I mix almost equal parts lye and water (always use just a little more water) and then once that is cool (below 100 degrees) I add my milk/cream/yogurt and then right away add to my melted and cooled oils. I also add powdered milk to my oils and make sure to give it a whirl with the stick blender right before adding the lye. I do this way because it is easier and since I have to buy my milk, a little cheaper.
This recipe is one you don't want to over insulate. Even more inportant if you are doing a milk soap with the recipe. It can over heat easier than other recipes. I would just cover with some parchment paper or something like that.
Canned goat's milk is like evaporated milk, right? I can't remember right now off the top of my head. But if it is, I would go with the method I just talked about above. If it is not concentrated milk, you can freeze 3/4 of the milk in ice cube trays. Then when you are ready, pour the other 1/4 milk over your ice cubes and then slowly add your lye to the mix. You may need to have the container in an ice bath to keep the temps low. Make sure that all the lye gets dissolved.
You can use any milk. I like buttermilk a lot in my soap. Yogurt is nice too. I haven't used soy milk or almond milk yet though.
This is a very very flexible recipe. You can add equal parts salts as you did oils ( so 3 pounds of salt for this recipe) and you have a great salt bar.
