Second this. Also, I think the 51' samsung plasma is on sale at BJs for $599.I always recommend Costco if you have the option to shop for an HDTV. 2 Year warranty standard, and you can buy an extended warranty up to 5 years (it's pretty cheap, around $30 IIRC). They also have a 90 day return policy if you aren't happy with the TV for any reason.
AWD is always a good option if you don't mind buying used. Otherwise I would setup an alert on slickdeals and wait for deals to pop up. Keep in mind that most new TV models will release in the spring so you might be able to get a deal on last year's model.Dont think i really need a smart tv since I will have a ps4 plugged into it. I don't have a local costco in my area I have a sams club thats closest thing i can think off. I have been looking at online stores such as newegg and tigerdirect and woot.
8ft away, you could go with anything from 46" to 55" and have it not be too big.primary use will be ps4 and watching netflix on ps4 be about 8ft from tv just the ps4