Not sure why we are trying to move either Clarke or Milner out of 9, they are talents. Hookers fill a gap at 7 when you need it, but will tend to play link/pivot in my opinion as opposed to being a specilaist. Not having a pop at anyone but I think people look at the likes of Robinson, Leuilui (sp) and Burrow and presume it is a simple transition and it is far from that. Look how Goldy, who whatever you say is talented wrestled with the challenge of trying to become a half.
Let Hudson play 13 or from the bench, let them rotate - not sure we need to clamour to move either of them. I am a big believer in if you get your best 13 on the field at any one time, they will play well together. Look at Saints who seemed to have Moore, Cunningham and Roby on the field at the same times last season. If they're all fit and in the most appropraite 17 for any given week- play them all.
