First time ever I put Lilac in a squad, but it worked perfectly, so thank you!
Squadspeeds I ended up with: 644, 647(Lilac), 413, 401. Helper squads: I just picked "whatevers", those 4 squads were the ones necessary to reach pests right on time, the helper squads were more a backup for RNG nodes.
And now to figure out the ideal farming setup for ?-8