Your speakers look fantastic!Very interesting!
I can attest to the massive difference an improved crossover can make.
Also use the Duelund 16 and 12GA tinned copper wires. They take a LONG time to break-in - 150 hours. The sound will change significantly during that time, including sounding downright terrible for the first 100 hours or so…
I am using a combination of 12GA and 16GA. Each sounds considerably different. At the low cost, it’s worth experimenting with both gauges.