Should I sell or hold Chipotle (CMG)

Done pretty well with CMG over the past four years or so. But 14% of its restaurants are in California and the recent rise in the minimum wage for fast food restaurants (whose owner's aren't the governor's friends) has forced it to raise prices in that state. Maybe it is time to dump?
On the other hand, there is a 50 to 1 stock split on the horizon. So maybe hold on for a bit?
Decisions, decisions . . .