OK..... since you've provided so many good pictures, I think I can get pretty close for you.
Inside spread = 17.5
right side main beam = 21 left side main beam = 21
right g1 = 1.5 left g1 = 2.5
right g2 = 8 left g2 = 8
right g3 = 6 left g3 = 6
right side 1st circ = 4.5 left g4 = 4
right side 2nd circ = 3 left side 1st circ = 4.5
right side 3rd circ = 3 left side 2nd circ = 3
right side 4th circ = 2.5 left side 3rd circ = 3
left side 4th circ = 2.5
right side total = 49.5
left side total = 54.5
Gross = 121.5
Net = 117.5