Rat Fink - I use several different holders for painting - wire hangers bent to shape; old prescription bottles, short pieces of 1" pipe, and my favorite - the Tamiya paint stand.
I start every kit by cutting all the non-chrome parts off the sprue and sorting by interior, engine, chassis. Then I decide on the body final color so I can start the engine, chasssis, and interior. I drill the engine for ignition wires and than brush paint. While that's drying I'll put a coat of whatever color on the chassis and while that's drying I start the interior. If there's no bodywork to be done, I'll wash and wet sand, prime, wet sand again, and then shoot the color.
I have this thing about colors. For instance on the '69 Nova I recently started - the final color will be HOK blue pearl (don't remember the exact color right now). So that tells my mind that the chassis needs to be a light blue with a darker blue used on the engine and suspension. The interior would then be various shades of blue. My exhaust pipes are always Testor's Steel enamel and the mufflers always Testor's Red enamel.
Maybe it's just me?