RustOleum on my floors & ceiling?

Hello, i have almost cleaned up and removed everything from my interior and i am looking at my options for painting my floors & ceiling. I have used Ospho on everything. And im looking at using the Rustoleum http://www.homedepot.com/Paint-Prim...053&langId=-1&keyword=rusteloum&storeId=10051

and coating my floors with a bedliner material. Any opinions?

Ryan