I have a an 2000 sq ft old ting ceiling that has the following combination: Replaced brand new panels old panels with the old original glossy paint on it, Old panels I have scraped most of the paint off of, some slightly rusty panels. I have put 2000 dollars into it so far with the new panels. I really want to finish it right! I don't know if I cover with rust oliuem or what. Any ideas?