RE: What would you do if you were mounting it?
Dang! He knocked off all of his character! As with just about everything, it comes down to what makes you happy. Obviously you seriously thinking about so I would assume your already leaning on one side of the fence anyways.
Pesonally, if it was me, I would probably have them rebuilt. From the sounds of it your not entering him anyways and he did do some major damage to those brows. The pictures you have will be more than enough for any good taxidermist to work from.