California would be a great place to have a training center, as well as have "minor league" type tournaments of their own, if they can make that work financially. A top norch studio with lots of seminars from their stable of fighters could provide some maintainace income, and the place could host samller feeder tournaments that would be great.
I have never visited it, but I hear the Gracie studio in Torrance is a great business example to model yourself after.
It would be smart to build an arena in a market that has multiple venues in order to put on a show six times a year that will draw maybe 6000 paid at best?