I'd be fine signing Moore, Ross & Kennedy.
Moore seems a useful player, seems most comfortable at CM, has played out wide and was LB on Saturday, could become a younger Mark Docherty, good for the bench and filling in for injuries.
Ross understandably divides opinion was great for his first 3/4 games (up until his FK) then petered out. I think he didn't like being played out wide and prefers to be behind the striker.
Kennedy is fine as backup GK, I would like to see him get around two full matches during preseason friendlies to give us a better idea of his abilities, don't think he's better than Hoban, but an improvement on Sanderson.
As for Lewis Milne. I would welcome him back.