I have a one and a half acre yard that is so bumpy me teeth rattle. I own a roller and a plugger, and want to roll the lawn but I want to minimize the compaction of the soil. should i plug first or roll first?
I wouldn't roll it at all. Rolling would compact the soil. However, plugging would aerate the soil.
Truly, if you want a flat lawn Grade it don't roll it.
I agree . If it's that bad , disc it up and grade it back down . If you have any drainage issues , that would be a good time to address them as well .