Great to see your system. I also have the Jazz Modules in a relatively small room (12x14) and they have worked out great. I have a set of Real Traps throughout the room and that really saves me -- otherwise I could not turn up the volume at all. I have the speakers set up in about a 7.5 ft equilateral triangle with the speakers crossed about 1.5 ft in front of me. That seems to give me more extended highs and more depth of soundfield. The speakers are very close to the side walls but doesn't seem to be an issue given the 90 degree radiation pattern of the waveguides and nearly 45 degree toe in. I had RealTrap minis on side walls for first order reflection, but moved them to the wall behind the speakers without deterioration in the sound. I see you have ceiling mounted traps. Do you find that they help? I have one on one side of my ceiling, but never got around to mounting the other (and ran out of traps as currently configured). I'd be interested in your opinion on that.
It is great to be able to tune the bass ports. I've tried the different resistors on the high end but preferred the original configuration.