Man I really need to get a big Dane JP harness.
dogbertwrldrulr honestly this hobby is what pushed me to finally learn how to sew, and it is such a great skill. It only took one 15-minute youtube tutorial before I was altering my old flightsuit. It also came in handy with my Jetpack harness. Once you figure out how to thread the machine, it's as simple as pushing the foot pedal.
If buying a sewing machine is the obstacle though then that's understandable. Singers go on sale on Amazon quite often though, I think I got mine for $90.
Also - your audio setup looks awesome, and it sounds like you are very knowledgeable in the subject. Would you consider ever doing runs of those? People are always looking for audio solutions in this hobby.