Nice work on the lure mate, looks awesome! Good see someone using the old school 'finger gauging' technique. It surprises me how many bait builders don't know this simple skill.
I've never felt the need to go past 400 grit sand paper for lures. You must have gotten those very smooth. Using a drill to wrap the through-wires is clever! Sure makes it easier and faster. I didn't see any lead or ballast weight added to the lures. Was the through-wire and hooks enough? Nice looking lures! Hope they do well.
The lures were definitely too smooth! I will also stop before 1000 with the next ones. The assembled lure weighs 30g, a bit light but moves very well in my opinion. I hope to upload a video soon with some tuna catches!