That's all I've ever done.
70 rear / 30 front. To spite 70% of your stopping power being delivered by the front.
I'm of the school of thought that if you're using your front brakes seriously, it's for 'serious' braking. The bulk of the time, I am using taking up the slack in the front brakes, but using mainly compression braking aided by rear brake. Down two gears, level the bike, pelvis forward, shoulders back, palm heel on bar, then when straight(ish) front brake to stationary.