my first overclock! can i do it more?

Flomps

Honorable
Dec 9, 2012
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10,690
i got my new parts and made my pc a few weeks ago, today i successfully overclocked it to 4.2ghz
42 x 99.7 at 1.235v

i have 2 questions, is there anything to do post overclocking?
and also can i overclock it more

i have an i7 4770k @ 4.2ghz
and an arctic freezer 13
i'm getting 70 to 80 degrees Celsius on load, is that bad?
and i get 40 on non load.

thanks guys

EDIT: i lowered the voltage to 1.225v and loaded it for 5 minutes, got into 83 degrees max.

EDIT 2: i lowered it to 1.210v and it seems fine still 82 degrees, i think ill ease back into 4.1ghz