I'm most likely going to brush paint the cage with some heavy duty paint I have for chassis coating

Planning on white interior and bars myself.
I always like light colors on the bars etc, as they make problems like cracks much easier to spot.

What kind of paint did you use on the interior?

I used dupont nason base clear paint but I usually use chroma base by dupont.

Looks very nice. But when you start crawling in and out and around the inside to fab, mount and run wires, you will end up scratching the paint. It helps if the paint you use can be easily touched up without it looking like its been touched up. I sampled paints before I did mine and ended up using the rustoleum hammered finish. It is easily touched up and you can't tell where it's been touched up once dry. You can apply it with a foam roller or brush so there is no need to mask up anything. They also make it in spray cans if you go that route. Either way, it dries quickly and is more scratch resistance than automotive paint when crawling all over it not to mention it's cheeper too.

i plan on coating the floors with some bed liner spray just where your feet will sit. The rollbar is going most likely a light grey color w/ a tough coating i used on my suspension as well. Its brush on so it'll be easy enough to apply w/o masking off the entire car. I decided after primering the cage that spraying it was too much of a pain, so i sprayed around it w/ the white. Im picky about some stuff. The floors will be covered in cardboard etc while im working under the dash.