Using those numbers, the field would be way too small. <200 feet to the corners and ~385 feet to straight away center with really weird alleys (assuming a geometry in which CF points north). Alternatively, you could have one 400 foot corner and one 200 foot corner with about 290 feet to CF. Are any of the seats removable? If not, I don't think soldier field could possibly work. I'm calculating these numbers in my head, so I could be way off, but this would not appear to be a tenable solution.