Wow, you really have a lot going on and very little knowledge about how it should be done. One glaring example is the 1000 feet of CAT5. You are also completely mistaken on the grounding and ground loops.

I know you came here for advice but whatever we tell you is going to require experience on your part to pull it off. I seriously suggest that you put this in the hands of a contractor who has done this before. And I don't mean just the installation, they need to look at what you are doing first.

You also should understand that if this is in Chicago, none of this can be done except by a union electrician.

-Hal

CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.