To give a little perspective to the dimensions of the stadium, if you consider that each block on the west lower in my render is 25seats x 28 rows = 700 seats per block, multiplied by 7 blocks which is 4900 seats in the west lower.
West middle is again 25seats x 12rows = 300 seats per block, multiplied by 7 blocks which is 2100 seats in the west middle.
West upper is 25seats x 35rows = 875seats per block, multiplied by 7 blocks which is 6125 seats in the west upper.
In total, the new west stand holds 13,125 seats on its own.
Here are the stand capacities in my model:
The east stand is 16,250.
The shed is 9,750
The Mathew Harding is 11,250
The west stand is 13,125
The corner between shed+west stand: 1,950
The corner between Mathew Harding + west stand: 1,950
The corner between east stand and shed: 2,475
The corner between east stand and Mathew Harding: 2,475
Overall (model) stadium capacity: 59,225
I am pretty sure that the isle's between each block are too wide in my model. Also I think th entrances in th stands are too big. I think that if both elements scale were reduced, and only sightless, the stadium capacity would easily exceed 60,000.