I'm looking at getting the (x4)Pioneer Ts-M650pro 110 watt rms 4 ohm and (x2)Ds18 pro Tw220 bullet super tweeters 225 watt rms 4ohm. Looking for a good Amp without breaking the bank. Was looking at SKAR RP 150.4 RMS 150 watts X4 @4ohm and 250 RMS watts @2ohm. Would a 6 channel be better? If so what AMP?