Share 'Is Kreg pocket hole joinery sufficient to support my project?'

I am building a work bench for a pilot friend of mine that will be in her hangar. It will hold a metal brake that weights 380lbs. Plus I will be building a shelf that will sit on the bottom shelf of this work bench to hold the fingers for the machine. They are quite heavy themselves. Right now my plan is to use pocket hole joinery. I am curious if this will be sufficient. Below you will see a ske…