Pre-Washing Clothes & Blankets

Has anyone started washing stuff yet? I know I shouldn't throw his entire wardrobe in the washer so we can see his size, how he grows, what he has a chance to wear, etc. and exchange accordingly if necessary, but I feel like I should probably start doing a few loads of laundry in the meantime. I have a handful of NB and 0-3 month onesies he'll definitely wear, crib sheets, receiving blankets, swaddles, socks and cloth diapers to get ready. Anybody else started the process yet?