Your sp looks good, resilience is a little low but I wouldn't gem more than one of the +20 resil gems from WG, it just gimps too many other stats if you try to statck resil up to 1000. You can get around 750 resil with only one gem and pve weapons/shield. But I'm most worried about your stamina - 17.8k is like a pve geared mage. Try to push for 20k at least, you'll notice a huge difference.

Spell penetration is massive too. I'm not sure what yours is at but try +75 at the bare minimum. 80-100 would be better and if you need a prismatic for that, go for it.