Would drop the voltage if it's possible.
From all my reading, I have been unable to determine whether 1.4V or 1.35V is safe for long-term 24/7, but there's no clear answer, but 1.4V is as far as I'd go.
But if you are staying at 4.7 and it will so so on lower voltages, then it would be worth trying to lower them.
Problem I got now is, I was only aiming for a 4.5GHz OC with the coolers I had, but now that I am getting better coolers, I won't be able to stop myself from seeing how high I can push it