88Cardrex

ok, I'm not exactly the biggest audio buff, but I definitely dig good music. So far in my system project I've got going I've got a set of 6.5 focal 165k2's, mb quart 218.61's, a JL 500/1 and a JL 12w7 with a 1 farad cap. I've read alot on here about rear fill not being worth it...or something like that. so I was thinking, this is really hard to explain, it'd be easier if I could show a diagram, but here goes, would it be feasable to set up one set of speakers normally, in the doors, with a door mounted tweeter. Then, in the middle of the car, set up the other set of speakers, so that each person, passenger and driver, has both the right and left channels in their own little space. for instance for the driver. I'd have one component installed in the door with the left channel, then install the other component, wired in the right channel, by the right foot (near the gas pedal) and have the tweeter installed in the dash pointed at the drivers right ear. Then do the same for the passenger's side. I hope you understand what I'm saying. This is going to affect my choice in amp to run these. (whether I go 4 channel or 2). Would this hurt or help imaging? Would I be better off just going with rear fill?
Thanks