I am hooking up (4) 6.5 speakers (50 watt/RMS) and (1) 10-inch Memphis sub (150 watt/RMS) in my boat. I am leaning towards a five channel amp to cut down on wires, problems, etc. It seems these types of amps are not very common. My questions is (see link) will this sub work or would hooking up amps (4 channel for 6.5 and 2 channel for sub) be better. Thanks !!