How to become an ariel applicator?

[TEXXX46]

Hello everyone. I'm not sure if I am even doing this right but my question is about crop dusting. I am a 36 y/o ironworker in San Francisco and my childhood dream is to be an ariel applicator. I logged 28 hours as a student pilot about 16 years ago and ran out of money. I am in a position to pursue that dream again and I am wondering how to go about doing it. Do I need to get all of my tickets first and then go to an ariel application school or can I do it all at the crop dusting school? I am also wondering if anyone has any info on schools here in northern california?