IMO that is going to be too much voltage for a 24/7 OC. Honestly I think just letting boost do its own thing is a good idea.
And your board won't have it yet. For Asus boards, only a couple of the ROG boards have beta bioses w/ the curve editor. Should be in the next update tho.
That is good to know. My temps are in check and not exceeding very low 70C.
When I let PBO do its thing it is kinda alarming to me. It will boost to as high as 4.775Ghz but when it does it uses upwards of 1.435v... Kinda like my 3600 system where when it boosts with PBO it is well into 1.44v