Stupid question how many servos will i need it says 4 ch on there webite but i think they mean a 4 channel with 5 servos y harnss or is it actually 4 servos?

if so its not tooo bad i mean go for those nice 80+ inch/oz il need only of them (ail/elev) and one of the heazy duty for rudder (im cheaping out on trotal sorry but this one will be a normal standered servos)