I've done the maths and to confirm, we are now guaranteed of a play-off spot.
In the 2nd placed teams table, we would be on 13 points if we lost to Poland (games versus San Marino do not count). In Group B where Bulgaria, Denmark, Czech Republic and Armenia are all fighting for 2nd place, Armenia are the team that can finish highest in the 2nd place table with potentially 12 points (excluding results versus Malta), meaning none of them can catch us, so we would definitely be one of the eight teams to qualify for the play-offs. It is likely we would be a seeded team, but not guaranteed.
So it's as simple as this, assuming Ukraine beat San Marino:
- Win and we've qualified.
- Draw or Lose and we're in the play-offs.