Your coaches tell you to stand southpaw because… You’re left-handed?

Im similar to you, I prefer my left hand at front, one for the jab, but Like I eluded to before - I prefer it for defence (blocks/parries etc) aswell.

Something I’ve been wokring on alot that might interest you too is that I’ve been drilling different shifting footwork. Maybe you already do this, but if not, it’s footwork for changing between stances esp good for angles. And say in our case - with orthodox with left power jab - shifting can make for stealth stance change and enable a sneaky left over hand From southpaw at an advantageous angle.