At RB: Forte is a must in any PPR. Mathews would be a better play than the rest based on talent, but he's not until Monday and who knows about his shoulder just yet. I'd go with Bradshaw, who is solid when he's healthy, and he is.
At WR: I agree on CJ and Smith, but I think I would start Thomas over Maclin, but only because I think Peyton will be looking to make a statement in week 1, and Thomas will be the benificiary.
That being said, Maclin against Cleveland wouldn't hurt ya.
The key to a winning season is focusing on one opponent at a time. Winning one week at a time. Never look back and never look ahead.