I'm guessing by the egg : size ratio, the OP is discussing SW. A 9 pound mudbug would be scary! lol
Tone- The largest obstacles (literally and figuratively) are water volume and cooling. You'll need to maintain a temp of 40-50 through the use of chillers. They are slow growing, disease prone, animals that require a very large volume of water. Commercial lobster farming is only now being tentatively attempted and is still more expensive than the catch so it is only being pursued by a few companies. I'd suggest starting off with a FW crayfish or shrimp variety to test the waters so to speak.
Welcome to AA btw!