The Bedfordshire club, who ply their trade in the the seventh tier of English football, travel to the Ricoh Arena for arguably the biggest match in their 121-year history.
Abbey, a former striker who came up against the Sky Blues on a couple of occasions during his playing career, said: "We're in the hat. What I'm trying to say to my lads is if you strip the game down, there have been giantkillings, it is a typical David and Goliath scenario.
"Normally where the upsets happen are where the non-league side are at home, we are away. We'll obviously go there with a game plan, we'll go there to definitely not lose a game of football.
"And it's just going to be luck and down to the Gods on the day, what frame of mind Coventry are in and obviously our game plan.
"I wouldn't try and predict what's going to happen but we have got good players in our side, a lot of ex-pros, a lot of younger players who I think one day will forge a good career - whether in the league or non-league circuit. So we'll go there, give a good account of ourselves and come 4.45pm we'll know whether we're still in the hat or not."