Best way to get enhancement prisms andor asc shards?

[limpid granite]

I'm currently 1586 power including seasonal artifact power, I need like 18 enhancement prisms and 9 asc shards to masterwork all the armor I want

[eager aurora]

master nightfall

or craft them alll.

[limpid granite]

would master nf go alright at my power level? I'm worried that if I find an lfg team I'm gonna end up getting carried