I'm sure that all of those combos will work! With the exception of Remnant cruisers who actually have tough shields and deep flux pools, I feel like 4xDLMG (~800 kinetic damage) is enough though. Apogees and Auroras (and Paragons but an SO Hammerhead probably can't get in range without getting popped) would probably also want a shift to ACG+HMG+4xDLMG, but I haven't really fought those this playthrough. As I think Megas has pointed out in the past, a lot of the most important enemies for the player to kill in the early and mid game have poor shields, so ships don't need too much kinetic.
What 2xACG gets you is kill times that are blazing fast, so as Gotcha! said, so you can hit and run just popping enemy ships and getting out. Destroyers are dead in one pass (against weak destroyers that are close together I can kill 2 enemy destroyers before the ship system deactivates). How fast I can maul a cruiser is important because they often have both escorts and decent weapons: if I can't get in a lot of hull damage in my window of opportunity, it might be a while before I have a good chance to dart in again.
(This is imo the principle difference between piloting an SO Hammerhead vs and SO Dominator: Hammerhead has, for its deployment cost, more firepower and is faster, but is only a medium destroyer in toughness and can get wrecked by ranged heavy fire. Dominators are so tough that you can push through almost any obstacle without worrying.)