Dover boss Martin Hayes says his main aim remains promotion, despite the hype surrounding their historic FA Cup run.
Having already seen off League Two Gillingham and Aldershot, the Blue Square bet South side take on League One Huddersfield in the third round.
"If we went out to Huddersfield then promotion would definitely be a bigger party than the Cup run," said Hayes.
"That proves we haven't just been a good team every four weeks, we've been a good team every week all season.
But he told BBC Radio Kent: "It is a once in a lifetime opportunity.
"If we ended up playing Manchester United in the fourth round and didn't get promotion it wouldn't be the end of the world."
It just seems that the FA cup is smiling on us at the moment and we're not desperate to leave the competition just yet
Martin Hayes
Just like the previous two rounds, Dover will go into the game at Huddersfield as underdogs but Hayes thinks there is enough belief in the side to pull off another shock.
"We've got to take heart from Brighton - who are runaway leaders in that division and they've had trouble against Woking and FC United," said Hayes.
"We'll do some homework and we'll go and give them a game.
"It is a lovely stadium and it may only be half full, which might even work in our favour more so than theirs.
"The players are starting to believe what they can do and people are going to start to think we're invincible in the FA Cup.
"It just seems that the FA Cup is smiling on us at the moment and we're not desperate to leave the competition just yet.
"If we can hang around and annoy people for one more round we'll give it a good go."
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