The good thing about the Sturridge injury is like you said, the amount of time he played against Notts County really took it out of him. He got an injury in the warm up before United and had to play a whole 90 minutes with an injury. He needs a break but the most important thing is that he is match fit, something he wasn't at the start of the season. Hopefully he will be even sharper.
I think Kelly is probably going to play right back more than anything, I don't think you can underestimate his attacking play, when he gets going it's hard to stop him. I can see us playing Sakho left back or playing a back three.
If we played 3-5-2, it would allow both Suarez and Sturridge to play up front, and Johnson and Enrique can bomb forward, like Enrique did so well at times last season. If we play Sakho or Illori left back which both can play we can go to three in the back when attacking with Johnson or Kelly being further forward.
Loads of options, its boss.
