It’s fine man. No need to overthink it and get into paralysis by analysis.
Min-max when you need it(for example need for defense because you dying to often or if you want to beat a time record in Crucible)
People normally don’t take both Revenant and Rhowan’s Crown because 2 sources of Reduced Target Resistances don’t stack (you benefit from one source of Reduced Target Resistances (like Elemental Storm or Raise the Dead), from one source of % Reduced Target Resistances (like Viper or Ultos) and from any number of -% Lightning /Elemental res.
However you can leave it at that because Revenant is good just for the stats and Raise the Dead is pretty bad devotion skill at low level because skelies live for a very short time and you can have small number of them and I think Elemental Storm beats it then.
Hard to tell what’s optimal/overkill for where you are at the game right now (your equipment, skills etc) 
Only you can tell Sometimes following an optimized guide forces playstyle a bit and I don’t think it’s good for a new player (it takes some fun away I think from experimenting, taking decision by yourself, developing own playstyle).