Looks like your off to a good start Tom. I was gonna buy a kit from aquastyle online myself. However I ended up purchasing the LEDs, heatsink, and thermal pads from rapid led just a few minutes ago. I debated on the thermal pads for a day or so, and decided wth let's give em a try. I ended up getting the TRC driver from nanotuners though(never heard of the other driver before), and the meanwell just looked to confusing to figure out the first time around.
If you'd like I'll let you know how the pads work out. Or if you're coming to the A2 swap stop by my table, I'll be using my led build there. Just have to figure out how to mount all of it into my aquatic life t5 fixture.