All you can really do is try, to see what happens. I have cellular interference in my area, so I am using the FA 26" antenna, the FA light blue filter, and the blue FA pro stick.
If you don’t have interference in your area, the filter could possibly be reducing your results. There is a great “Do I need a filter” thread here (which I don’t have a link handy for) that gives step-by step directions for running a scan on your system which will show the frequencies that you are receiving signals on. That can be very helpful in determining your need.
Note that if you remove the filter you will probably have to play with lower gain settings in order to get the best results. The gain setting adjusts the internal amplifier in the dongle, effectively “adjusting the volume” on what is received from the antenna. When you remove the filter, more of the original signal (good and bad) arrives at the dongle, so less amplification is needed.
Edit: Here is the thread: Do I Need A Filter?