I think your guessing him a little big. Here is what I would say.
left right
Main beams 21 21
G1 3 3
G2 7 4/8 7 4/8
G3 4 5
H1 4 4/8 4 4/8
H2 4 4
H3 3 6/8 3 6/8
H4 1 6/8 1 6/8
49 4/8 50 4/8
49 4/8
50 4/8
inside spread 16
116 total score.
I think that will give you a pretty good estimate.