You have 8 Tac slots, and you're using a torpedo. I have questions and suggestions:
Why are you using a [A->E] warp core? This is not a science ship/torpedo boat, so your Weapons power should be set to 100. You would get the maximum benefit from a [W->E] or [W->A] core. [W->A] improves the performance of the Nukara T4 traits at high power levels; W->E would help you speed-tank, or at least move between targets faster. Speed = DPS if you can control your helm.
You have 8 tactical ability slots! Nice!
Attack Pattern: Omega has a longer cooldown than Attack Pattern: Beta, and puts Beta into a 30-second cooldown, whereas having 2 AP:Betas keeps them rotating every 15 seconds, so unless you slot
Jenro Zemok*, you will spend a lot of time waiting for your attack patterns to cooldown.
With your DOFF setup, I guess I can understand why you use Beam:Overload. My question is:
Why do you have 1 B:O and 2 torpedo abilities slotted? This seems backwards, since you only have 1 torpedo. Speaking of which, what is your rear-facing Beam Array doing? Can you replace it with another torpedo?
Would you consider dropping Torpedo: Spread, to keep your single-target theme?
I would recommend changing your tactical ability arrangement to:
ENS - TacTeam1, TacTeam1, Kemo1
LT - T:HY2, B:O2
LCDR - AP:B2, B:O3
CDR - AP:B3*
* Is Temporal Negotiator as awesome in practice as it sounds in the description? If yes, then change this to AP:O3. That 5-minute cooldown makes me nervous.
You aren't flying a torpedo boat, so I must ask:
Do you feel squishy?
If "yes", then I kinda-sorta understand having the AMACO shield. Otherwise, I would recommend switching to the
Romulan Impulse Engines and
Nukara Resilient Shield, in order to boost your attack pattern abilities, and get the
Nukara 2pc bonus. Alternatively, the Iconian 3-piece is highly recommended these days; the 4pc is recommended once you upgrade the warp core to [AMP].
Overall, your ship looks like a ball of fiery death that doggedly attacks one target at a time to avoid drawing too much aggro.