I see American students write off entire portions of the US. My own daughter didn’t want to look at the entire middle section of the US. It’s okay to write off the west coast if the OP chooses.
“You are more likely to meet other students from Asia there as well.”
Why assume the OP would even be interested in meeting students from other Asian countries? Again, Americans are quick to dismiss people from other parts of their own country (the South, the Northeast, California), I cannot see why an Indonesian would necessarily feel the need to hang with Koreans, Vietnamese, or Indian students. Maybe the OP wants to meet a broad mix of people.