Divine Ire + Herald of Purity

Heyo, i'm looking for some help with theorycrafting.

I've played Ignite DI before, kinda liked it, but i felt vulnerable because it was a time when defenses sucked. I like summons too, but they can lagg behind and not feel that great. Resummoning feels very bleh. So i'm toying with combining these ideas to fit my style.

The main idea:

-Spiritual Aid for increase minion dmg to player (for cast/summon build)

-Offense: Damage with timeless hubris jewel's slum lord +80% minion damage.

-Playstyle: Convocation on walk button, generate purity summons with DI upcharge, fire laser while summons tank. (This works, i've tested this part).

-Add in reaper, spectre, auras for any unused slots.

-Defense: Summons tanking, determination/block

There's lots of things i'm not sure about yet. Like classes. Guardian for cast speed (40%+), Necro for dmg (60%+), Scion for Aurastacking. All seem decent. Or if there's any good unique gear. Or how feasible it is to get 2 or more slum lord? Or if purity is pure trash or any good? (I know phantasms+HoP is supposedly strong)

This is the setup before slum lord, no idea how to calculate dmg: https://pastebin.com/WEYi82Su

This is what i'm levelling in SSFHC (lvl53) right now: https://pastebin.com/WEYi82Su (Feels pretty good so far. Getting slightly carried by having a Honourhome helm that has +2 gem, otherwise just rare gear)

Works nice so far, but dunno how to scale past early mapping on SSFHC i think. I plan to do this softcore next league though if it's scalable into red maps.