I'd think that it will be a fairly strong side. In fact I'd have thought that there's only be 3-4 changes at the most.
If Hibbo, Gibbo and Jelavibbo are only weeks away then players who are currently playing will be able to be rested/rotated/dropped when they're back.
Their crowd (and team) will be up for it and they've got a reasonable record in big games in the cup in recent seasons.
I don't think our record in cups against lower league sides has (despite some pastings in recent years) yet to reach a certain level for us to have any thoughts taking this lightly or "expecting" a big score.
I also think that they'll be right in our faces. So far only West Brom have looked to make it a tight game and we struggled to create anything there.
I'll be quite happy with scraping through 1-0 if that's how the game goes.