I like the ER PPC quirk on this mech--with the arm mount it's nice for long range peeking and you can fire it all you like. But going with two of them is still a lot of heat and really just makes it a PPC sniper then. Instead I went with 2x LPL for some nice mid-range output, and then 3x MPL for short range DPS. You can fire any set of these weapons at-will without heat buildup, and fire a pair with overlapping range (PPC & LPL or LPL & MPL) for awhile till you start getting heat warnings--then slip back to just one group. I'm loving this mech at the moment! EDIT - Max armor (minus shaved head for even tonnage) and a 300XL because it's the most internal HS you can get and I want remaining tons for external HS, plus 300XLs are really common.
For a non-XL version, try this--it's not wub-wub-wub anymore, but it's got the same overlapping range bands principle:
