Faryl should make it through assuming there are no disasters.
But the second slot is wide open. Andrew Muir might make it, the Irish dancers will need to be good but I'd say they are a possibility. Jeremy Lynch also has a chance, I think. Vizage could go either way. If it's like the quick change people on AGT, then they might go through. If she sings terribly again then Simon will buzz within 10 seconds.
I can't see either Andrew or James getting through. They are both too much "X Factor" and if they are up against a variety act I think they will be put out, especially if Faryl is already through. Their only hope is that they both finish in the top 3.
EDIT: They seem to have attempted to spread out the singers as much as is possible. One at the start, one in the middle and one at the end. James must be singing something lively if he is opening the show.