First week submitting, and sum4 looked extremely intimidating, with no clear direction to optimise into. After looking at some polymer sum4 solutions compared to sum, it seemed like on these it just meant "don't 6p it" which was entirely fine by me, though that necessitated building the output backwards. The only thing I was fairly certain of going into this was wanting a length 2 hexarm to play with the glyph of division, because being able to grab both irons at once felt really efficient, and that did help to constrain decisions elsewhere, but everything else felt rather up in the air and definitely is where the weaknesses come from. The main thing I wish I could resolve is needing a dedicated arm for each of mors/gold/waste, I tried merging the first two into a biarm with track but it was slow and expensive, going back to grabbing the input by the gold arm rather than the waste one would also be nice to save a cycle but that would be difficult. I'm assuming min will be something like 350, but I lack the experience to say for sure.