Bob - assuming you will continue improving, I think your approach of getting the basics right first is the way to go. A well built, non-microphonic fixed cable, which is sturdya nd has good strain relief is all we need for now. And if you build a TOTL flagship in a year os so - go for the detachables then.
Good to see you posted the photos. I was very tempted to slip in the snaps you showed me last night - but thought this time I should wait . Really like the look of the cabling you have in the photos. I take it your a lot happier with the sound signature of the range now?