We definitely need to try and recruit a centre if possible. Although i'm not sure were from, I guess we need to hope IL can pull a rabbit out from Aus. Dont think it needs to be a world beater just a natural centre which would IMO eradicate any concerns about Charnley's defense. Otherwise, the only other option would be a cheeky bid for someone like Arundel or Lawrence.
Next year I'd go with
6. Finch
7. Tommy
9.McLlorum
Int. Mellor/Powell/ Russell. (Use all throughout the year.)
McLlorum adds alot of bite and intensity early game especially in Defence which I like, Plus Tommy's defense outwide helps the right hand side. After 15-20mins get Tommy into hooker and bring one of the yound lads on. Eases them into the first team gently, if one really impresses they'll push themselves into the starting 13 but thats how i'd go to start with. Also Tommy needs to play all the 80 he's to good to be on the bench and never struggles to play the full game.