Agree about ARC/CEC. I disabled ARC and use an optical cable for sending audio from my tv to the receiver for OTA 5.1 television. I disabled CEC control and use a Harmony remote to control all of my devices with a single push of a button or two.
Ideally if you're going to move audio/video via HDMI from one room to another the best way to accomplish that is to use a CAT-6/HDBT setup. If you want to put the cabling in-wall, then install 1" conduit and then run a couple of CAT-6 cables. That is the best way to "future proof" your setup for quite a few years. You can use the CAT-6 to extend an ethernet connection (like I do from router to an 8-port giga switch and then off to my HTS) or to extend an HDMI connection using the HDBast-T (HDBT) connection. That's a bit more expensive but is probably the best way to do that. Whatever you choose to do, at the very least run your cables in a conduit. If you ever have to repair/replace a cable and it's in a conduit, you will be so happy you installed it that way. Just make sure the cable doesn't have any sharp bends. I installed conduit in the walls but the cable in the attic space is open to the space and carefully laid in place.
Speaker wire can be about anything you want to use as long as you pay attention to the distance and ohms. I use 2-wire ribbed, insulated 16AWG wire for a run of about 35' to push 8ohms. The connectors used can be bare wire, banana plug, what ever. I used heater cord wire for mine and it's just fine.
Speaker placement can be what ever sounds best to you because listening environments vary considerably depending on room size, furnishings, etc. Wall mounted speakers will limit your listening environment somewhat if you ever change the environment (couches, curtains, carpeted flooring to hardware or vice versa, etc). The basic setup is your front R/L speakers should be at least 6' apart, and at a height that is ear level when sitting in the your optimum position. Center is usually below the tv but can be above the tv. Sub is off to the side and at a position where you can't localize the sound. Side speakers are to the side of the couch (or your main listening position) or slightly behind you. The height should be ear level as well. The angle of the speakers is something I've never paid too much attention to (maybe I should) so I just angle mine in slightly to my listening position. My side speakers are probably 12' apart so they are a bit further apart than the front R/L. Calibrating your audio is a whole different matter.
Last edited by Otto Pylot; 08-17-2014 at 10:49 PM.