Less than 7 pds...sounds like you have figured out the correct technique.  I am going to try the glassing technique a guy is using in a TF p51 build in this foeum.  He posted a video and his method looks great.  Just a coincidence that I will be using it on a TF p51 also. 
From a few feet away my ultracoat covering is passable.  But up close you can see so many seams.  I want to learn to paint better so that I can get away from that.