While it would be nice to improve on the cable photos, by the photos you already have posted it appears you have taken great care in the construction of the cables. Careful craftsmanship, even if time consuming, is in some ways its own reward. I get that impression from your work.

Depending on what kind of information the EQ will give you about the results of its automatic adjustments, it would be interesting to run several times through, to gauge what the average findings are if they vary slightly each time the EQ setup is run, with one set of cables then switch to the other and do the same, and afterwards compare the averages.