I hope bleeding this goes well, getting the air out of the loop "might" be a challenge. Can I suggest something more like this, with a bottom outlet port..
I'm a slow learner. Got a lot of scars on my fingers to prove it!I have one of those HF tubing notchers. I bought mine when they first came out 15+ years ago. IIRC, I paid $30. It's worth every penny. I've done that same drill bit trick before drilling out stainless steel pop rivets, but mine was closer to the tip of my finger. Since then, I only buy name brand drill bits - usually Norseman/Viking.