Not knowing what 'Westcoast' exactly is when it comes to music, I have no idea how to further classify it or what it would encompass if I explored the genre...
...at the same time, I live on the West Coast, and I like this song...so uh...I don't know exactly how to respond here. :P
Nice chill beat and the song has enough variation to the main beat and instrument/synth additions to prevent the song from getting boring, so good on ya. haha
Keep it up!