Look at the path profile of
WFFF and you'll see that the terrain between the transmitter (shown on the left of the graphic) and your location is a bit of a challenge.
Reception of the group of stations to the NW (349° compass) is possible. I would try for reception of WFFF if I was in your situation. I would need to mount outside, clear of obstructions.
I would use an Antennas Direct 91XG equipped with an Antennas Direct PA-18 preamplifier. To receive WVNY, real CH-13, I would install an Antennacraft Y10713 also equipped with an Antennas Direct PA-18. The two antennas can be mounted on the same mast if separated by at least three or more feet. the cable from each antenna can be combined only on the 'TV/output' side of the power insertion blocks which should be inside out of the weather.
http://www.solidsignal.com/pview.asp...u=853748001910
http://www.solidsignal.com/pview.asp...u=853748001187
http://www.solidsignal.com/pview.asp...u=716079000994
http://www.solidsignal.com/pview.asp...nna-%28UVSJ%29
From in the attic, you'll be limiting your options to the signals in green, yellow and perhaps the occasional weaker signal. Can you consider roof or gable mounting?