Thats a damn fine buck and I would be happy to have him on my wall. If what you say is accurate, 30 1/2 outside, the G-2s look about 12 -13 inches and obviously the other tines alot less. He is going to have about 80-85 inches in spread and beams. 36 inches of mass or close to. The tines lengths don't bode well for it being a 200 inch buck.
200 inch deer need 25 inch beams, 3 inch brows, 19 inch 2's, 11 inch 3's and 4's and a 25 inch inside spread. Obviously those are averages just for reference, but if he is lacking on his 2's then he must have to make it up elsewhere.
I have a buck with 30 inch beams and 30 inch inside spread that is a big 3 point frame and the frame score right at 180. I'm kind of basing my estimates off comparing that buck of your dad's with mine.
Score is just a number and that is a great buck!