Yup, unless you are going for high speed production with proven machines, drills, coolant and G-code, just keep it simple.
There is no sense in pushing the limit all of the time. He has already had a seized drill and a shattered one, why set him up for more problems. And, his boss does not know what he is doing and is not knowledgeable and has him working with poor drill bits, ground down.
KISS---Mike
Two Haas VF-2's, Haas HA5C, Haas HRT-9, Hardinge CHNC 1, Bother HS-300 Wire EDM, BobCAD V23, BobCAD V28