Need ideas to tweak my AX Krait

Here's my AX build

I can't fit an Enhanced Xeno scanner on it, or a better FSD, because it puts me over the power plant capacity which is already maxed out.

I accidentally went overboard engineering this power plant to level 4 to get the lowest heat emissions, the goal is to have the ship remain below 20% when it's flying around. Although EDSY says the heat is 16% at full thrust, in reality it's more like 20%, and if I fire the gauss cannons it takes a few seconds to go below 20% again.

If I make this power plant engineered at level 3 instead of level 4, I can accommodate an Enhanced Xeno scanner and an engineered FSD, at the cost of a little extra heat, a claimed 17.7%:

Modified build with level 3 low emissions power plant

Another thing I could do is get rid of a gauss cannon as I usually use two at a time with the beam laser, and then switch to 4 if I have a shot at an exposed heart. Also it helped when I ran out of ammo sometimes or if the primary ones would get damaged.

Any other tweak suggestions? I'm not looking at building a different ship for now, looking for ideas for THIS ship.