How to Speedrun a Perimeter

This is how Chronos made a 528x528 perimeter in under 4 hours. Now you can too.
THE SCHEMATICS HAVE BEEN UPDATED, USE V2
Schematics: drive.google.c...
NOTE ON SCHEMATICS:
The bottom pistons on the sweepers should be at y11
They are set for a max block height of y94. You will likely have a higher max block height, in which case, move the duper and return side subregions up in intervals of 12. Do not change anything else. If this isn't clear, ask on Discord.
Feel free to ask me or Divided for help in either of these discords:
Speedrunning discord: / discord
Chronos discord: / discord