I use the headstock. Especially when doing the thru-hole so I can move the plug with the tailstock. Also when I'm doing the scoop on my pikie plugs. If it's an MT2 then it should work. I have the same lathe and bought the same chuck from HF.
Master Airbrush is on the cheap side, but I bought a Iwata Neo on sale for $50. But it didn't last long, so I switched back to my Master Airbrush. Since my patterns aren't fancy, I'm sticking with those.
Subsurface. The needle on the left I made, but the one on the right I bought at a yard sale in Montauk a few weeks ago. I think it was an old bluefish plug, super heavy with just a tail hook. I just refurbished it.