I'll be curious to see what you do for paint, rattle can or spray gun, and what all will get color. I'm pre paint currently, trying to figure out what to do for the heads, if I want to leave them natural, paint them aluminum, or paint the orange. Same with the front cover.
I'm planning on using Ditzler/PPG Urethane Hemi Orange (without gold metallic) paint (sprayed with a gun obviously) that I already have.
I'm planning on painting pretty much everything but the valve covers. I may skip painting the oil pan though, undecided on that yet.
Other than the heads, most of the aluminum stuff has enough wear/tarnish that I thing it will look better painted.