"For me, these races play a pretty big part in my preparations for London,'' Gorman said.
"My focus is primarily on training over the next six months, so these swims will provide the perfect opportunity for me to get in some good race practice.''
There's added incentive, with a $5000 winner-takes-all prize purse for both men's and women's winners, although Baker is not getting side-tracked in that respect.
"The first thing for me is to get the job done and get in the top two to get to Portugal,'' Baker said. "I don't want to have a race that is not competitive.
"What I am trying to learn and put into practice is how to race at a world-class level so I don't want it to be slow and tactical. That won't be the case with Melissa in the field.
"No doubt Melissa needs a 10km race and it will be part of her assessing her preparations. It is going to be a good strong race and obviously that's what we need as well. We need international swimmers to come over provide such good competition.''
Baker and fellow Queensland-based Kiwi Charlotte Webby will be favourites for the top spots among the New Zealanders, while Radford, who won the Australian 5km title last year, will battle with leading Kiwis Casey Glover (Wellington), Phillip Ryan (Auckland) and Stefan Talbot (Howick Pakuranga) in the men's race.
They will have plenty of competition in the form of Fina World Cup winner Trent Grimsey and fellow Australian Josh Richardson.
Most of the elite racers will also contest the 5km championship on Sunday.