What WILL hurt is the insurance policy to cover that kind of thing. Last number I heard was around $600/month. That's $7200/year.
Other costs have been mentioned.
It's a very expensive idea, but it CAN be done.
Who is funding the project?
Are the authorities aware?
Is the site visible by anyone, even by pure dumb luck?
Is the site completely fenced-off?
What will you charge?
What will you offer?