I'll be doing the same on mine Saturday right around the corner.
I probably don't have to tell you this, but... be sure to leave the parking brake OFF. You wouldn't believe how many calls I've gotten over the years from friends trying to get a brake drum off while the parking brake is applied.
The drum should slide right off after a couple of smacks with a hammer to jar it loose from the axle. Just twist it forward & backward while pulling. It may take more effort if there's a wear groove on the inner edge. If parts fall out (broken springs, retainers, etc), NAPA on Navy Blvd stocks the hardware kit and darn near anything else you may need.
I'm gonna PM you my number in case you get in a jam...