Hey man, its really starting to come together.
There is an option for quadrangulate but in my experiance of it it can sometimes mess up your flow, so I would suggest trying to clean up your tris manually, that way you have the control over whats happening with your mesh.
Could you post a wireframe for the head so far? Just so that we chan have a look at your edge loops etc.
"No pressure, no diamonds" Thomas Carlyle