lol.. IMHO = in my humble opinion. :D
What Yobha was saying is use the money u spent on buying front and back comp sets to buy a good one for the front alone. Personally I'd sell the Sound stream and get a DLS or Peerless or CL61 (I think that's the model) or Scanspeak (hehehe) for the front. Then pump it with a good 100watt amp (TRU, Alpine, Brax, Helix, etc) and just live with front comps. Cuz if u have good front comps, you can make it "fill" the rear as well. Screw back speakers.
Go to the IASCA TT today (Friday 24/6) at Tmn Desa and listen to seefu viper poison PISCES car.. then you will understand what I mean. Or even Louis or whoever there. Almost if not all seefu's don't use back speakers and those who do.. are VERY VERY high end setups.