Am I missing something????????? With 10+ stations less than 3 miles away, in the same direction as the desired weak station, how will an amplifier help??? It would be like using gasoline as starting fluid on a charcoal grill (ouch) In an urban environment such as this one, an amplifier will only worsen the situation. The OP will need to reply on pure antenna gain for any chance of receiving the weak RF43 signal.
I recommend the
91 XG for it's flexibilty. I would first try it without the extension, which makes it a
43 XG & see if the smaller footprint will provide the needed gain first. If not, the the extension can be added for additional gain & directivity.