Z_Tilt, Where to put points question

I have a triple z-axis bed and use a BL touch that is offset from the nozzle to probe my bed.

My question is where should I put the front two probing locations? Because of the design of the printer and the offset of the probe, I cannot put the probe points exactly over where the bag connects to the z-axis. So do I just get as close as possible on each of the front two axises, and should those spots be mirrored in distance relative to where the bed connects to each axis? Or should I have them as close to where connects to the bed as possible even if they are in different spots relative to where they connect to the bed?