I went with just two butterfly anchors and it's fine!
Just kidding. That bad boy is fastened with four heavy duty concrete bolts (the kind you need a socket wrench to tighten). I hung from the bracket and if it can hold a 225lb man then I'm sure it will hold a 75lb LCD. Anyway this is pretty damn solid right now and I'm happy with it.
Now for the cords inside the wall.
I have heard many people telling me that power cords don't belong inside walls. It's against code. Rather than breaking code I wanted to find out if there are alternatives to having to build another outlet.
Any suggestions would be greatly appreciated!
Thanks again for all your input on hanging my LCD it brought me a lot of insight.