They look great, and Welcome to the fun.
I agree with Blackwater. Using a .125" nitro over powder card would be a good addition, and it would save you a few grains of powder. Wax fiber wads aren't necessary, but if you used them in the future the over powder card would give your powder a layer of protection from being contaminated.
You could also purchase a 3/4" circle punch from a craft store and make your own cards from empty cereal or cracker boxes. These will allow you to add to the wad column and reduce your powder use. I usually use ffg or reenactor for 12g shotshell loads. I do use fffg in 20g shells, because of the smaller volume available. The fffg is a little hotter, but works just fine since you already have it. I usually try to work the load up to be a square load. Meaning that I use the same volume of powder and shot in the load with enough wad column as needed to get the correct height.