Level 100 fire | efficient and effective gear to farm

Hey y’all, I just hit level 100 and basically need a refresh on gear. I know I can do mali gorgon and khrisalis world gear. I don’t mind spending a couple days farming as a break from the game.

Should I just go for the mailstaire set or spend my time farming gorgon? Also I just finish part 1 of Krystal is so that’s as far as I am story wise, are there any bosses that are actually worth farming for wand, Achane, ring or deck?

Thank you in advance!