Advice Needed: Grow Box Door

I think I’m going to hold off on the panda film for now. I am only going to have time for a single auto run right now. Might be able to squeeze in a second if i start them at the right time while the first batch finish. I think kilz and caulk should be enough for that if I’m careful to not splash water or anything. I’m going to have to do some more modification before I start it back up anyway.