I'm using a PRINTnZ Plate and I was trying to find the warp point or the high points on the bed. I made this up to see where the high and level points were.
I would suggest 100% infill because any thing less would turn my/your printer into a table top vibrator. I don't know if this could be a parametric setup, but in CURA you can turn off uniform scaling and just size to your print bed. My bed is 250mm in the Y and 160 in the X.