A few easy things you can do with the craft you are trying to create below.
You can make all gears same element (ice, shock, fire Etc). If you're staying with Inferno pet, try making all items with flat ED fire. You can also keep the elements the same as you have them.
Main hand = i like the apocalypse mythic concept. Emerald stone to increase quality and dmg. Use fluorite to max epic value after applying emeralds.
Offhand = change fester and red CD to 5K flat ED and 7500 HP. Emerald stone to increase quality and Damage.
Chest = You can gain significant damage with one of the options below in lieu of Alchemy. If you're going to add + sets on ring and amulet, change the set affix to Sadism. You only need one druid to activate the HP Regen on your amulet.
- Pick skilled if you want primary skills 50% more dmg
- Exposed for 50% more dmg to pierced enemy
- Ruptured if using scalp will give 50% more damage during bleed
- Sureshot 100% deadly strike against enemy at full HP
Helmet = Talents/Elixir stone can be changed to 7500 HP. If you use +sets on Ring and amulet, you will activate the permafrost regen bonus of 2K MP/sec.
Ring = You cannot have two Resource mythics. Blood Magic and Alchemy are resource mythics. You will want sets/elixir stone on your ring... Maybe think about Scoundrel set on ring Or Summoner.
Amulet = apply elixir stone for +sets, Make One Epic Affix 5K Flat ED Or 7500 HP
Pet = You can change out a couple of these To 5K Flat ED And 7500 HP.
What about your natures? Use beryl stone to change them. Maybe make all six death for 2.5%x6 = 15% additional crit chance on top of the base 10%. Or you can make them haste -- lots of options. You can also do 3x death and 3x strength (75% crit dmg).