Help alleviate my anxiety - engine was noisy on startup

Ok, never EVER “prime” an engine like that again. You don’t do that even if it has roller lifters. I’ve seen many roller cams killed because guys were using the starter button as a priming system.

You may have gotten lucky and not hurt anything. Probably so.

Lifters can be noisy on start up, but as long as it goes away pretty quickly, like when the gauge is up to full pressure then that you just have to live with.