Hi, I am seeing white spots in model with subsurf on and display in edit mode on and wondering if those are areas of problems that need to be fixed like vertices too far in or out? 
Don't worry, that is completely normal. It is because it shows the wireframe un-subdivided and the mesh subdivided. Where the wireframe goes below the mesh you get these 'white splodges';)
If you want you can 'hit the triangle' like this:
