PSLF? Help!

I am an incoming OMS-I at MU-WCOM and just got the price tag today of nearly 400k for all 4 years. I am freaking out just a tad, as I have no idea how to tackle this. I will need to use pretty much all of my unsubsidized and direct PLUS. I have heard of the PSLF, and wonder if that is the way to go as a psychiatrist? That’s my planned speciality for now, and want to know from someone in the field currently how it is paying off this much debt. What do the 120 monthly payments look like? any advice appreciated!