I don't know what CBS Standard Scoring is. If it's 3 WR/2 RB, I love your team. Between Wells and Williams as an RB2, you are in great shape. And your WRs are an excellent starting 3. Obviously Rivers is a top QB who will throw a ton.
I'm not sure about Cooley, though. He's kind of dropped off this last couple of years, and I'm not sure if he's played yet this preseason due to an injury. I wonder if there's a better TE on the waiver wire for you. Personally, I'd rather have an Olsen/Winslow/Lewis type TE. Heck, I wouldn't be surprised to see Moeki have a better year than Cooley. (Who knows, cooley may turn out great.)