First time Guardian any tips?

I decided to kind of blindly build my own guardian build this league based around being an Aura bot for my Merc.

Things have been going decently well, im able to clear T16s pretty efficiently, but going into content above that like Ubers or t17s im starting to lack damage. Currently saving up for my triple minion damage elegant hubris setup to continue buffing my absolution of inspiring to hopefully makeup that damage gap but im at the point where everything is mostly theoretical and costs 10-15divs for bigger improvements.

All 4 of my spectres are running offensive auras besides the one that also has Grace. Any other big ideas for how i could really improve my build here? Or am i just locked into the grind of getting more expensive gear for upgrades.

https://poe.ninja/profile/Dark_soldier187-4608/character/CommanderDungus