I can has hi-res image / Bluebrick file to see exactly which studs get the tracks? Or are we not too concerned with the baseplates lining up back there?
There appears to be enough “wiggle room” in the layout that an exact stud count should not matter. Try to make it as close as possible to what it appears to be on the BlueBrick.
How high off the baseplate should the track be? Are we using the PennLUG track standard of two plates above the baseplate? Or something else?