this isn't a match you change the schemes and experiment. It's the match that probably gonna give 2nd place.
Win for us probably means we can push for even first place.
Draw means that without any unexpected troubles, 2nd place should be ours.
Defeat means we need help from Cyprus and Belgium (and means we need them both to take results vs Bosnia).
Everyone was talking about Belgium match being the most important one, but with things being as they are right now, July will be the month we either make it to the play offs, or we don't.
So I wouldn't put a new starting scheme , nor would I put some new players like Siovas, who's been away form the NT since 2014.
Moreover Torosidis wingback in this age? Get real. He was a wingback till his 30, he was fast and could honestly keep the whole flank, but right now, this player needs fewer duties than a whole flank for himself.