Share Some Engine Bay Clean-Up Tips
If you really want to get into it with the wiring, you can always unplug everything that goes to the dist, alt, water temp sender etc. Put some alcohol on a rag and wipe them all down clean. Then buy some original style vinyl tape and retape everything as far back as you feel like.
My Duster had wires running everywhere. Plus many unused ones. I just wiped each wire down with rubbing alcohol real quick to clean the grease off. Then I wrapped them all in tape as far back as I could. Allowing the wires to exit the tape as they got near their destination. I even kept the unused wires and just let the tips of them come out of the tape at the end of their length in case they are ever needed for anything in the future. Basically went from wires going every which way to a 1" tightly wrapped loom that goes around the engine bay. Much cleaner.
To clean up quickly, I'd cover the carb and distributor with plastic bags and put rubber bands around them to keep them in place. Then I'd degrease and pressure wash. Making sure to not keep the water pounding on any seams or anything. If it's a normal driver, it's probably going to have it's fair share of caked on grease. I can only imagine the amount of rags you'll go through. I'd get the majority of it off with a pressure washer and then detail it with rags from there on out.