The only thing I would do is switch Bowman and Thacks, this might raise a few eyebrows but 1) As I mentioned in the predictions thread, we need to include some more elements to our attacking game - attacking drills, inside and overlapping players etc - and Bowman - on the odd occasion he's played/started at halfback - has carried out those moves and created opportunities. 2) We've got to be realistic and ask, who makes more of an impact off the bench? Thack's running game could be such a useful weapon off the bench, bring him on just as players are starting to tire and tell him to exploit his running game.
Concerning the White/Rettie battle, I really don't know who to pick. Rettie has pretty much been faultless all season and is so strong defensively in contrast to White who's been a bit suspect. But on the other hand, we all know White's attacking game can game changing at times, so I really don't know.