Maybe the 3rd tier will be a "LAOla" one like Da luz or EmiratesFrom the Section I count
26 rows lower
Which would be 70 rows, so it looks like a good 60,000 in those plans if my count is close.
My comment about being potentially boring is mostly about the bowl itself, which is another three teir all the way around very uniform, personally something a little more inventive would be nice, although with a tight site like that I can understand a plan like that.
Final renders should be fun to see, even if it will be a little while.
Just to clarify:JimB, those renders were done by a Spurs fan based on the above image. They are a mock-up, nothing more.