The priest is used much in the Old Testament. In the New Testament the application is universal; believers all become priests and there is no “some have it and some do not” status. Sounds like you aren’t the one who should be talking about staying biblical.
So the modern day protestant “elders” with that title have the exact same role and powers as the “elders” from the New Testament? I doubt any of the people from 2000 years ago would agree with you on that one. In fact, I doubt they’d even recognize what a modern day “elder” is.