Fantastic job! You really showed us a very creative use of the Temple's larger openings to fit your Relay as well.
This solves that issue for me, as I've been wondering how to deal with the same unit. I'll be attaching my FM3, Relay, and Mission SP-2 to my Duo 17. The jury is still out on my Disaster Area two-button MIDI switch; it might not make the cut.
In contrast, my Duo 24 still has my "kitchen sink: setup: two(!) Eventide H9s, tuner, wireless, Mission expression pedal, and hold switch; plus Quilter's six-button footswitch! That sucker is HEAVY!
A couple more observations: I was so OCD about everything being 4CM and mounted to the side. It took so long to do; I'm over it for a wide variety of reasons: tap dancing, weird ground loops. Don't get me wrong: it sounds amazing, and it's all analog in the front of the amp.
Furthermore, based on yours and others' Temple boards, I'm now letting go of the idea of side-mounted I/O. It's just too much trouble. It now makes more sense to simply plug in everything at the back of the unit. However, for those who want to tilt at that windmill, I've already sourced right-angle IEC, 1/4", and XLR cables.
So now I'll be using my FM3 into the MicroPro's XLR input as a FRFR - as it's on parity with my Mackie home studio monitors - and... I'm not gonna obsess any more about hiding cables!