Looking for advice - wood bed 63 C20

[Asshat]

I pulled all the rails from the bed, in the process of doing the brakes. I’m not sure how far to finish the inside of the bed and how to go about it. The truck will not be painted for some time, so it’s going to remain with the patina finish.

I thought about wire brushing everything inside the bed, especially the rusty areas, then spraying with rust inhibitor. Maybe even giving the whole inside a coat of primer and white paint. I plan on getting a wood kit, but I have never done one of these beds before - not sure what I am getting myself into.

Would like some input from the experts. Might be a good time to replace the brake lines too.

Pretty sure I won’t be able to drive the truck without putting in the bed first.