dude, did someone recommend you these and trying to get you raped or are these ur own favorites? most of stuffs u list are kenwood which are why would you want a 4 channel amp for the subs? you can go either a 2 channel for 1 sub or mono amp for 2 subs depending on how much power u are running. JL w6x2 is very good i supposed
anyway to help you decide for the rest, first of all you need to tell us how much you are willing to spend and what type of system you want. SPL or SQ? if you are on a tight budget and you care less about sound quality, then kenwood or Jesen will work for ya. otherwise get some real stuffs like Alpine Hu, some component speakers instead of coax. so give us more info