Good Evening,We are wanting to set up a home theater system at my wifes parents home. They are wanting to install speakers in the ceiling and get a new AV Receiver. We will probably just be going with a 5.1 system as that will be all he will need. 4 speakers in a square configuration and then subwoofer I guess on the floor for that bass punch. We dont want to go crazy on cost but want a decent sounding system.Can you recommend the following:Speakers / AV Receiver / Proper Placement / Etc. I would appreciate all help and Thank you.