ALL millstones should be at 512su, Mechanical press should be 1024su and mechanical pump sholud be at 512su. Whole farm requires 5120su that mean you need 80 white sail.once built you need to fill the tanks with lava. Then fill the mechanical pumps with water, they should be in the water.
you cut off half the back part - one of the sails is completely missing and it isn't clear where you put water and lava or how to get them into their places.