I would vacuum then, air, then wipe down. Any remaining dust could get blown onto your new paint job while you lay it down, IIRC.
This is what I've seen on various shows, I have never done it.
69Mach1 - warmed up 395W (AFR 185s) and Astro A5 with hydraulic clutch, 3.5" Alum DS, 3.50:1 posi, rack&pinion/tilt, 235/50ZR17x8 front & 285/40ZR18x9 rear, American Racing Nova wheels, all MSD, Holley 750, custom paint, headlight relays, Shelby drop & 2" lower all around, Hotwheels Redline scale is 1 to 1. (Up for sale now)