Repaintng my '97 burb

[rkf63k10]

Ok, all you painters out there professional and weekend warriors, I need a little help here. I would like to try to change the color of my '97 suburban. I'm Looking at possible doing a flat black. (my favorite color). I have done enough research to know that I can just paint over the original paint by sanding it with 600 or so, grit sandpaper or scotchbright ect. I've got to fix a few dings that are very shallow so I know I can just feather out those areas and use filler to smooth it all out. Now, where I'm confused is, do I just primer the areas that I fix, scuff the original paint and spray color or do I need to primer the whole vehicle? I'm thinking of using Eastwood's 1 stage Urethane rat rod satin paint. Not looking for a fancy paint job, just something cool and different.

[chevrolet1616]

Why not plastidip?