This plate, if properly used, will fold the ribbon cable over itself so that you can rest it along the Y axis instead of to the side of the printer along the X axis.
Yes, the ribbon cable is long enough for this. I've tested with the Z axis all the way up.
I'm in the process of making a clip for the extruder gantry so that the cable stays along the Y axis and will never interfere with the print process.
FYI, this design if mirrored could be used on the other side of the machine for mounting things like a raspberry pi or camera. Just throw me a mention and link if you use it for this.
eSun PETG is a bit more forgiving but PLA will work
the supports are only for the recessed screw holes
A longer M3 screw is optional for the bottom screw. I believe the stock one fits but you may have to bore it out with a drill if you don't want to lower the model's Z axis and shrink the depth of the bracket.