Hard to tell without knowing which content you want to play and also really depends on your group. Both options are quite far away from current meta if you are aiming for that.
That said, if you have already a high crit chance through trait and mundus and plenty of DoTs in your build, I would definitely go for 2 pc skoria.
It has also one of the best visual proc animations imo, those meteors are still awesome after all that years.
Won't talk about meta here, it's quite easy to find anywhere on the web using google.
Regarding crit chance you will be fine around 60-70% normally.
It's quite hard to go into further detail without knowing anything about your build tho.
Assuming your stats are unbuffed your crit chance is well, as it will be around 60% fully buffed.
In this case I would stay with mora's for now (so you have enough crit) and switch skoria completely if you don't need the extra pen.
You could get any monster piece giving you weapons dmg (velidreth or selene for example), a piece with max stamina (as domihaus or maarselok) could pair well with coral (given the painful micromanagement^^), or you could slimecraw for even more crit.
But all in all I'd say with your setup you're good to go for all vetcontent in general.
Ps: If you're playing a twohander on your backbar, definitely get one from vma.