Marietta is at the very top of the heap in terms of baseball tradition and winning. They are contenders for the National Championship every year. A teammate of my son won a ring there. That said...
I've driven through Marietta several times and been all over California many times. Frankly, I think a California kid would have a tough time adjusting to that area of the country and being so far away from home. I think it would be a bad fit although it would be a fine baseball opportunity.