If you're considering downloading this I recommend looking up a quick tutorial on how to do faces yourself since it only takes a few minutes, is literally one of the easiest things to learn, and you would be able to do more than just these 7 presets. Learn to fish instead of waiting for people to give you fish, that is all.
So to fix the hair transparency issue while still using the gem shader I had to click the the shader settings (which is right above the block where you pick the shader for those who don't know) and clicked edit shader. This took me to visual studio (you don't need to sign in) where I could see a wall of code and towards the top there was a line that said "Que"="transparent". I simply replaced "transparent" with "geometry", file saved, and when I got back to the unity project the hair was opaque and remains so ingame. Before anyone asks, Yes I tried switching the render que to geometry directly in unity but for some reason it didn't do anything ingame.