"These are tough guys who know how to win," Keddell told the Weekend Herald. "We're not just picking easy-beats that Junior will blow over. Obviously Lou di Bella is Deontay Wilder's guy, so in four or five more fights, we're in the mix. We could be six months away from getting a call to fight Deontay Wilder, and we'll take it."
The high stakes mean Keddell has arranged for experienced American Malik Scott, a sparring partner and friend of Parker, to travel to New Zealand to train with Fa for three weeks.
Fa won his last fight in March against American Craig Lewis in Deadwood, South Dakota, by majority decision. He didn't impress the way he did in his previous fight in the US, a savage first-round knockout of Fred Latham last November.
Fa has conceded he didn't follow the game plan for his most recent fight in Deadwood, and was affected by the 1400m altitude.
All going to plan, Fa will also fight on what Keddell described as a big card in the US in August and will headline an event in Utah, where Fa has family connections, in October.
"By late February, we'll be 18-0 or 19-0 - that is the plan," Keddell said. "We've got to remember that Junior is a two-year pro and is on a development plan. It took Joseph [Parker] four years to fight for the title. We're happy with our progress - we're learning and we're taking tougher fights than a lot of guys around the world are."
Fa, who beat Parker twice as an amateur, seems destined to meet his rival in the ring at some point, but not in the medium term.