I would start at the beginning, the antenna. What can it do with no amplifier and a minimum length cable to a single tuner?
That might cost a new store bought cable...
Then, what good does adding a passive FM trap to the test do for you? (RS 15-024)
Once those are known quantities, you'll be in a better position to decide if more needs to be done.
I'd still like to see the 25' & 50' TV Fool predictions...
