I guess my first thought is that's a lot of LMB for that size of pond. Then if they reproduce you have a even bigger issue on hand. I would think you would be lucky to grow a bass to 3lbs if your not planning on feeding the pond. I would go with a hybrid striped bass instead of LMB, no reproduction more of put and take fish.
If your dead set on putting in LMB, go with 10 fish. Give the forage fish a year to populate and then add the bass. You can leave the original 10 in year after year to get them larger and take out every offspring you catch. IMO
