I had no problem printing with PLA and these settings

Infill: 30%

Support: Tree

Walls: 1.2mm

Brim: YES!!!

I rotated like this to get it to fit on the bed

 I could only make it fit 6 Gridfinity squares without going off the bed, so there's a CM on each side to do whatever you want.

You will need long screws to attach to the printer

Thank you so much.