I re-used the original spokes which are double butted and 1.6 mm at the center.
Sweet. Gotta be careful with that wind-up though...
Not sure what we think about re-using spokes
IMO you're fine as long the spokes have never suffered the low-tension condition which fatigues the hell out of the elbows.
I've re-used spokes with all kinds of damage, bent straight with pliers, huge chain gouges, etc, never been a problem.