I have Infinity Kappa component speakers, two for the front and two for the rear, and was wondering if this amp (http://discountjungle.net/ki0490wx4car.html) is adequate for powering all four of the component speakers. The speakers have a power range of 2-85 watts rms and peak power handling is 225 watts. Obviously, I also need to power four tweeters, too. Do I need more power? Or should I get this one: http://discountjungle.net/ki0412x44ohc.html . And is it necessary for me to have a four channel amp, or would a two channel do the job equally as good? Thanks in advance.