need advice on some heads

ok, here is what I looked at.Edelbrock Performer RPM Cylinder Heads 60775 at Summit. $800.00. like I said, I am no mechanic but will these not work. I know some of them are one head only but I think these are a pair. And, I think I read somewhere you can get a set of steel heads that would work really good on a small block that maybe just came out in a year or so ago. I don't know. just want my options here on what to do. maybe I wont go aluminum. Thanks