A pretty simple design; whittle them down with the LLas, then alpha the SRMs. If it gets too dangerous, you have enough speed and armor to pull out. On a mouse and keyboard, I usually run this kind of build with two groups; group 1 is chainfire LLas, group 2 is alpha SRMs. It makes it very easy to both manage heat and deal damage.
Your OP build is not bad, but too low Cool Efficiency. Id change from penta SRM4 to dual SRM6 + SRM4. Same Damage output, but less Heat. Downgrade Engine to add one more DHS. Here: or even cooler: Blagg