Sadly your not going to get a real idea of when you could hold LAX. Things change rapidly. Marketing makes a switch in equipment and the entire system changes. LAX has traditionally been a junior senior base. Meaning at the top end its senior and the bottom end can be junior because of the cost of living.
Your reserve availability can be measured to any airport your equipment flies into. That means that you don't have to be within 2 hours of LAX if you are within two hours of another airport used such as SNA or ONT.