The middle hole on the heel piece has no meaning in binding placement. You align the binding holes in the plate holes that align with the desired BSL range. The correct strap connection holes can be determined by dry fitting; don't use screws, just place the binding on the plate so the binding holes line up to the plate. As the strap is designed to move the heel piece in the track, you may need to slide the heel piece in the track to get exact hole alignment.
The photo of the toe piece is confusing. My recollection is that the BSL range indicating the bindings range mounted on the ski is clearly visible, not partially obscured as in your photo. That may be due to the need to slide the heel piece in the heel track to get the proper alignment of the strap to the heel piece. A picture of the heel and toe not zoomed in may help clarify what we are seeing.
Frankly, I have to eyeball this every time I mount a set of these. Without the binding in my hands, I can not provide you with specific details. Here is a thread that addresses some aspects of mounting Rockerflex bindings:
Difference between Rossi/Look Axial 3 and Rockerflex bindings
Here is an image stolen from newschoolers.com that indicates what the hole locations accommodate.
Getting the toe piece in the right set of holes is key to having the boot's center mark line up properly with the ski's mark. Once those holes are chosen, the rest become sort of obvious given that once the bindings are screwed in, you can adjust the forward pressure properly.
We are talking about equipment that can make or break your day. Sometimes it is worth it to go to a shop.