Roos said the Swans would use the two years before the new club's planned 2012 debut to shore up their position as Sydney's No.1 team.
Rather than pulling out of the western Sydney market, he said playing a NAB Cup game at Blacktown Olympic Park was a key part of the Swans' strategy.
"At the moment, we are the only team in town and we need to do the best we can to promote [ourselves]," he said on Monday morning.
"We've got to build up our membership base before they come in - that's a really important strategy for us.
"Playing at Blacktown's really important. We've got to get people from out in that area to buy Swans memberships, Swans memorabilia, Swans jumpers, all those sorts of things."
The high performance academies to be run by the four AFL clubs in NSW and Queensland from 2011 will provide the first flashpoint for the Swans and Team GWS.
While Team GWS will have exclusive access to southern NSW, there is set to be a fierce battle for the talent-rich region of north-western Sydney
"Now that the team's in play, we'll have a battle over zones with our academy because we're going to fight tooth and nail to get the best possible kids we can for our academy," Roos said.
"Absolutely, the battle lines have been well and truly drawn and we've got to do the best we can for our footy club."
