Hello There,
I am using two pairs of SL-3 for Front and Resr since the price is so great now it you just can't go wrong with two pairs. But you will need a lot of space for the rears too. Another option is using a pair of Aerius. I don't recommend the Script unless you are really in a very tight space. Last night I was watching the movie the Patriots, have four large speaker do have a better soundstage and clarity that small speake having trouble to produce.
Good Luck
Bill