Hot rod black or not...

I say do it. Who knows when you will be able to afford to do the total repaint? I did it because my car had a couple bad paint jobs on it and it was fading, chipping, etc. I disagree that your car will get more looks without doing it from personal experience. My car looks good all one color and gets thumbs up and looks all the time now. Before that it was just another multi colored beater. You can do it on the cheap too, not with rattle cans. I bought a 25 dollar HVLP gun, and a gallon of Blitz Black at the John Deere dealer for 25 more bucks. I spent two days sanding the car and repairing small dings and took an afternoon to shoot it. My total investment is less than $100 and now I have a cohesive paint job, not perfect but passable. As for sanding it down again, it's really not that much more work to remove one layer of paint. I'm also going to add a stripe around the back in a semi gloss to add a little flair.