Brandi, there is a chance you might be moving a little fast on stocking your pond. With your very vertical sides, there is a chance you will have some cave-ins when you get your normal spring soaking rains. You also don't know how much silt is likely to run into your pond before your grass is established to help filter silt in the runoff. If you had to clean out around the edge of the pond with your backhoe, doing that with fingerlings in the pond might be detrimental to their survival. Also, if the water is shallow, don't be surprised if you have some big gray or white herons show up to dine on your fish.
When you do get around to stocking fish, I'd get several pounds of minnows to go along with the larger catfish. The minnows will promote a healthy pond and also be food for the catfish.
I could be wrong, but I think you will be happier if you wait on the first good rain to fill your pond and see how everything stays together. There's no need to have to restock fish because the first one's didn't survive.