Per your TVFR:
Address was only resolved to street level and might not be that close to your actual location. For more accurate results, try entering a specific address or coordinates. To be sure you have an accurate TVFR, consider using this tool to generate a report:
Online TV Maps
If your home is sided with metal, stucco or masonry you may not be able to get much signal indoors. Another possibility is that the many strong signals will likely overload an amplified antenna... Non-amplified indoor antennas would be quite capable in a wood-sided home if the first TVFR is close to depicting your conditions.
http://forum.tvfool.com/showthread.php?t=2828
If the conditions shown in your first TVFR are accurate and you choose to mount outdoors (which is almost always a superior location) , the HD7696P is plenty of antenna. Smaller antennas such as the HD7694P and Antennacraft HBU-33 are also 'plenty'.
If attic mounting is your choice, (avoid metal and tile roofs) then the 7696 is a very reasonable option.
Having said all that, I think re-running your TVFR is a good idea... just to be sure.