Loss calculation:
-0.5 dB :: half meter pigtail (AP connection to N)
-2.0 dB :: 2 meter jumper (N to N)
-0.5 dB :: N to N gender changer
net -3 dB to get to 4.5 dB gain patch antennas outside
Speaking of patch antennas outside, let's aim them in different directions for better coverage:
Or place 12 dB gain omnis far enough around the building that most clients will only be able to see one at a time: