Nice tree Ron. I think you're almost there
The branch structure needs to be opened up a bit, as noted, to reveal the inner branch structure. Live oaks aren't that uniform up top. There are windows and open spaces in the foliage and between branches. Laying the bottom branches out horizonally, or even dipping below horizontal would help also. They don't have to touch the ground, but can dip below the horizontal plane.
As for live oaks being slow, I've found they are pretty quick to develop--relatively. At least faster than pines.