This is the epic pve build I want to try

The idea is to use Elemental Armor for the 15% damage increase and Tempest for the 30% crit damage increase

Burning Bright provides another ~13% and Flame bolt another 10% and Exposure another 7%

That should give you roughly +45% damage on normal hits and 81% (compared to 67%) on crits

Note - Even with all the things to make your pet better, you REALLY do not care about the damage it deals. Sure keep him alive (I mean free damage is free) but hes not the focus