The concept is good,
After concurence of the property owner or corporation, a business plan, insurance, needed permits, and so forth, might be doable for one or two hundred thousand dollars...
Not to mention the time it would take to put this package together would required attorneys, focus and dedication...
Legally this would have to be accomplished by a person or group of persons +18
And last but not least to try to accomplish this for a one time game may well make it the most expensive airsoft venue in the valley...