airgon

Anyone can help me to find what of these antennas are the best choise in this escenario, Vented tower 2 arrays of 3 120° Ubiquiti 5 Ghz sector maximum distance client at 4.5 K.M most clients are in 1.5-2 K.M area of each tower some tower have 8 AP same antenna Mostly Ubqitui Rocket M5 and Mikrotik Basebox 5Ghz Using UNIII Band.