I came up with the idea of taking the max engine as XL, add sniper stuff to it, and fill the rest with close weapons. Dealing kinda 800 dmg per round, 3 JJs make me able to do payback to the other jump snipers while 3 SRM 4s deal good damage close. Just do not use the PPCs with the SRMs or you overheat pretty quickly.
I built something similar today. More ammo, no JJ's. 3x SRM6. It's a fun build for sure.Very effective