Cold+Light nuker

[Gats]

I'm cold+light nuker. I have bicheon mastery too. I'm going improve these masterys to lvl 80. What mastery I should choose more - fire lvl 60 (only buffs: fire shield and fire protection) or heuksal lvl 60 (only passive +1078 hp)? And why?
thanking you in anticipation

[Pawnage]

i would leave it as it is: 3 skill trees.
Once 90 cap comes out, you can only max out 3 skill trees completely. If you get another, you're gonna hav to delvl it later.