We decided to use a dry-brush technique to paint the plywood floor for the time being. I leveled it the best I could and sanded it but seriously didn't worry about it too much. The whole point is we want it to look 'chippy' and old like it has always there. We used the same flat Antique White we used inside and under the cabinets, because it was there. I thinned it down with a little water and used a wash cloth to dab the excess water from the paintbrush before I lightly dry-brushed onto the weathered plywood floor. The paint hit all the rough edges in the wood highlighting the grain and knot holes, but also all my patchwork and leveling compound. I worried over how it was going to come out but kept going. I figured if worse came to worse I could repaint the whole thing solid white. I was really surprised at how much I liked it once I stood back and looked at it as a whole. Then I distressed it even more with my little palm sander once the paint was dry. I think it looks perfect.