The AC10s pairs better with the HPPC velocity than the AC20. But often you will be looking at 60 damage to one component. No jambs and you get a TC1.
Played around with this a little. Now it has dual AC10's for less heat, more range, and less weight lost through diversification (AC10+AC20), and added an AMS since there's no ECM. Tried to make it a touch cooler. Hard to work with the slot limitations, but found a good balance increasing the engine a little and shaving some leg armor: Edit: After trying that out, I found it WAY too hot. Did some more tinkering and came up with something that works, but it's different enough from the original build that I put it in its own thread: https://mechspecs.com/threads/fnr-6u-pinpoint-zen-2xac10-2xppc-2xml-ams-tc1-lfe325.16260/