The Samoan domestic winners finished second in last month's qualifying tournament in Pago Pago, behind Tupapa Maraerenga, to advance to the main draw.
Their only slip-up was a 1-0 defeat against the Cook Islands club, where they were reduced to ten men.
Coach Paul Ualesi said discipline remains a key focus.
"Trying to get the boys to work as a team. For now we're still working hard for the discipline - that's the main thing that we need to improve from the first round, that's an area that we're trying to work," he said.