Celtic Heroes

I'm pretty sure using melee has the potential to increase dps whilst leveling.

My reccomended stats would be:
150 (300) str
5 dex
Rest in focus
Enough vit to solo 189 4* wyrms

I advise 150 str over 200 dex for means of improving dps, dex has almost no effect on dps for mages. Less surviability but more dmg. Combo lix is reccomended.

Gear:
Dl totem and fire axe
Firestorm hung helm
DL bp or maybe radient es bp
Dl pants and gloves
Those boots that add to firestorm
Misc:
100 focus ammy
The rest is your choice, use your best skill rings and skill braces.

I hope this is helpful info to add on to RAPIDx's idea.