As far as I know, by it's very designation, FCC is the mode that adhere's to the legal specifications set forth by the FCC (Federal Communications Commission - a US regulatory agency) and is thus legal in all of the United States, and CE is the mode that adheres to the legal specifications in Europe.
I don't know exactly where you are based, but since you mention "state" I'm guessing it's US. So you are good with FCC mode.
And, again, AFAIK, there are no Federal regulations, yet, on FPV flight. But, just from experience, LOS is always a good idea. ;-)