New compressor

Most air tools are rated at 90 psi. I set my regulator at 100 and it drops to about 95 when in use. My old boss didn't believe in regulators or oil and we never had a problem. IMO that's abuse.
I have a 5HP 2 stage with an 80 gallon tank. I don't know what you need but I wish I would've had the electrical service to run a 7.5HP w/ a 120 gallon tank.