Mage Hunter need help (new to game!)

Hey guys, so i decided a mage hunter looks pretty cool (arcanist + inquisitor) but i really have no idea where to go for my build!

Should i go elemental, focusing on skyshards + the cold trap and the electric net?

or should i go for aether and fire?

kinda lost here any help would be greatly appreciated!

also i want it to be a casting build im not a huge fan of ranged / melee non casting builds in ARPG’s thanks a ton guys!