Several techniques here do not work at period 6, low periods require a bunch more handoffs, and handoffs take a lot more time. I'm not confident that period 7 is optimal, but it's competitive.

This saves 1 cycle by 6Ping the Leaden Sea output--two translation is faster than three pivots, but doing so causes a wrong grab from one of the nearby biarms, so it's saved for the end when I can delay the biarm grabs such that the consequences come after the victory screen.