PoE Ballista Totem, Combustion, Explosive Arrow builds

PoB for context: Up to about 20 div now and need to decide whether to invest further into EA or pivot. I like the speedy map clear of EA and bossing feels really safe since I just place totems and dodge around. That said I don't love the damage delay on EA and it can sometimes feel a bit clunky. I've been eyeing impending doom and also considering EK ignite or vortex ignite but I'm not really sure if these would really be improvements over my current state. I don't want to do a respec into a build that can't complete the content I'

Let's start by talking about the Eternal Damnation Agate amulet which drops from the floor 4 Sanctum boss (Lvl 80+) and can be acquired once you have a sanctum farming build (e.g EA or SRS). Eternal DamnationRequires Level 52+(16–24) to Strength and Intelligence+(40–70) to maximum Mana(-13–13)% to Chaos Resistance\\-5% to all maximum ResistancesGain additional Elemental Damage Reduction equal to half your Chaos Resistance\\ -5% to all maximum resistances is a terrible modifier, but as most of have already figured out, it can be ignored using the unique body armour Loreweave

So I'm still working on Chaos Res and Spell Suppression but I'm comparing my DPS to other PoB's and I don't understand why my DPS is so weak compared to them. Right now I have 8 Divines that I can use for upgrades but everything I'm looking at either cost more the 8 or is only a 3% upgrade according to the PoB "Trade For These Items" weighings . So I'm not sure what I can do from here.

This is my current setup. What could I do to improve it further? any recommendations?

Basically wanted quality of life from raider and leech+damage from chieftan. This creates an extremely smooth character that has the DPS of EA, decent tankiness (bit less than champ), but MUCH better recovery than either elementalist, heiro, or champ. Marks are chosen over arcanist brand for less buttons and alchemist mark does basically the same thing. Thx ziz for formula - attack speed fuse duration totems + 1 for some reason (1.89 1.7 6) + 1 = 20 fuses - Need to get chieftan before taking leech nodes. Do so ASAP. - EA gem changes are in config. Remove once POB updates. - Can be