Yep, I think you are going to be good. Your don't have a dam to worry about, you have some rocks and natural places for crayfish to hide and thrive, and you can learn about how well they do for a year or so till you are ready to plan the next stocking event.
Getting your FHM and crays in early is wise. Then think about your predators eliminating your FHM rapidly, what is the other forage going to be then? Can you source other forage?
It might be fun for you and your youth that you pastor to put some tilapia in. tilapia by themselves are fun since they don't interfere with crayfish or FHM, they keep the pond clean for you, and they are fun to watch. They cruise around in packs, they are not shy to be watched, they bask in the sun, you can hand feed them for fun with pellets and train them to come at feeding time.
Then they die off in the fall so next year you have a clean slate again. You can also use tilapia the next year as a headstart forage for your bass.
