The Pirates stormed group one, only losing once all season and Lee believes they can have a similar impact on the top flight.
Lee said: “We’ve been in this division for two years and we’ve won it, it’s time for a new challenge. We’re very confident.
“We’ll be disappointed if we don’t finish in a play-off spot.
“The club’s morale is at an all-time high. Throughout both teams, the mood is fantastic. The lads have a great attitude and they certainly have the ability.”
Lee believes his side just need to up their fitness levels.
He added: “Pre-season will help the lads get to the level needed to compete in this league.”
“We hope to get a few younger players in. The older lads are already having a big impact on the players coming through. They’ve taken them under their wing and helped turn them into great players.
“It doesn’t matter that we’ve gone up a league, the ability never changes. It’s all about the fitness. To survive in the top flight you have to be fitter than everyone else and we’ll work hard in pre-season to get there.”
The player-coach concluded: “There is a fantastic attitude at the club and the fact we are Club of the Year shows that. During my time at the club the morale has never been higher.”