Hello Saildog,
I'm the bearer of bad news. Your wishes aren't viable with the reception plot you provided.
Your signals are trending very weak for FOX and CBS. Those alone negate a attic or smaller antenna. Red shaded signals need large aerials placed outdoors with no obstructions so that they provide a good amount of gain and work their receiving ability to their maximum.
This also negates an attic installation. Attics can be viable in suburban areas with good to excellent signal access. You have neither. Further attic installations after signals fall below about 25db in signal strength, they just cannot penetrate your roof.
Trees are a large factor too. If you are shrouded with sizable trees, they will attenuate (reduce) these weak signals coming from Atlanta to the point where your best scenario would be intermittent breakup in the picture.
You are in a situation where you require a large UHF and a large VHF aerial above any tree or building obstruction pointed at Atlanta to have a chance.
Anything short of that, it is my thought you will not have the results you are seeking.
Cheers.
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