Starting to test-fit things to see if there are any issues, but all going pretty well at the moment - nothing unexpected and unforseen...
The rear plate-assembly with the shifters fitted, glad I designed slots into the plate, but even so, the paddles itself provide for a good amount of adjustability:
I wanted to stray away from the standard where one would drill holes through the button-plate to mount it....I opted for a different process here, making life easier assembling and disassembling the wheel - but also possibly looking a bit better without bolt-heads on the front? Not sure, but I like it.
I got some 50mm stainless bolts and cut the heads off. Drilled out the pilot holes on the wheel to 4mm metric and threaded it to M5. Screwed the studs in and secured them with a washer and bolt from the back. Pretty rigid setup, happy with it.
Then, I am using some very strong 3M high-strength industrial double-sided tape - I doubt this will ever move, I tried my best after putting it in place, and it isn't going anywhere. I quite like the look, came better than I anticipated.
I also used a very thin 3M double sided tape, almost as thin as regular cello tape, to secure the tiny labels in their pockets. This is also pretty good, whilst still allowing me to remove them and change them out for others if I so wish...
Below, labels fixed in place and plate secured to the wheel.