Coil overs are definitely cool. Infinitely tunable etc. The front is easy, just put one in where the stock shock should go and you have it. The rear is another story. Generally you have to start cutting holes in the floor back there and then DD status gets affected by the holes and the framework you need to do. A better alternative is to use coils in the rear with good shocks and coilovers up front if you want. But with the setup you are planning, with only a small uptravel would require very soft springs on them. The bottom line is it won't corner well. Coil over suspensions set up this way are notorious for swaying in corners.