I am working on my top for my keezer. I initially used 3/4" ply for the top screwed thru the lid to 1/2" ply on the inside of the lid. I found granite tile at home depot. With the weight of the 3/4 " ply the lid is heavy. Can I change out the 3/4 ply for 1/2" ply and still put my granite tile...