If you take Manning and either Decker/Thomas, then the kicker and/or defense are also acceptable. The one problem with taking Manning, WR, AND Moreno is this: QB/Receivers work well together as they obviously can both have big games. When you take a RB with them, most likely one will go off, but one will not. (I'm talking running vs. passing game)
A much lower risk and potentially higher reward strategy would be to take someone like Lynch. I really like him this week and think he will get many carries with a good chance of a TD or two.
If you want to load up on Denver, I would stay with a passing combination and the defense and maybe the kicker.
If you're looking for a good TE option, I'd take Gonzo. Seattle's cornerbacks are outstanding and Ryan may look to Gonzo more than usual as Julio and Roddy may be neutralized.
After that, I'd pepper in other players with good value. Other players I like this week are Crabtree, Gore, and Ridley.
TIFWIW, but I have won our league's title 9 times, with the next closest person at 4. I also finished in the 99th percentile last year in the ESPN playoff Gridiron Challenge and am at 98.4% after the first round this year. Good luck!