I can find one combination of results tomorrow that would almost certainly tell us where we'd be playing the second leg assuming we get no strange swings in goal difference on the final day.
In the unlikely event that the following all happen tomorrow:
Swansea lose
Blackpool lose or draw
f*rest win
Cardiff draw
Leicester draw
We'll almost certainly be playing at Cardiff in the second leg, with the trees confirming third place, Cardiff 4th and us 5th, with 6th place still undecided.
In theory we could overtake Cardiff or Swansea could overtake us on goal difference on the final day, but it would need a swing of something like eight goals.