My 2 cents worth...
Dufty should play fullback in the cutters. Lets not forget how a couple of bad games at fullback knocked mann about.
Let dufty adapt to playing against men with the cutters, with Dugan being Dugan, Dufty will get a fair few chances through injury and rep footy to Dugan.
But he needs to find his feet in reserves.
Also, moving dugan to centre means we loose Milne, and at the risk of getting shot down, id choose Milne over aitkens any day of the week.
And i say no to Dufty on the wing for the simple reason fullback and wing have different requirements and Dufty has to adapt to actually fullback play against men.
The kid has all the talent in the world, but a few bad games under a panicking mary will ruin the kid.