I have a simple newbie question. I do not have the space to add a sub or rear speakers to a new HT at this time. If I were to add 3 speakers at this time to be placed in the front of my room near the TV/reciever do I get a center channel speaker and 2 surround speakers? Do the surrounds have to be used in the rear? What do I look for.I was looking at something like the JBL Trio135 speakers but do the satellite speakers have to be used in the rear? Someone please help.