"I really like my little horse. He is not a star yet but he has great speed and he can win if we get the right run," says Williamson.
"What I don't want to see is one of the All Stars horses running straight to the front and getting an easy time because then they can pace a half [800m] in 55 seconds and we are in trouble.
"They have three in the race so I'd love to see one of the other two in the race [Invitation Only and Cantfindabettorman] get involved early and inject some speed or some pressure into the race.
"If that happens then we can win, if it doesn't then I can't sit back in a small field and I might have to come sit parked and that is a really hard way to win."
The All Stars trio are all handy enough but Onedin Miki, who had a hard run when fresh last week, looks to have the most scope for improvement and gets Natalie Rasmussen back in the sulky.
On a night with plenty of short-priced favourites who look hard to beat, Williamson says he is delighted to get back behind talented lower-grade trotter Harold Smith (R2, No 6).
Williamson drove the imposing trotter to win last season and he looks to have an open-class motor, with a 10m handicap on paper effectively level terms as there is only one rival starting off the front.
"I really like the horse and think he looks a winner if he behaves himself," says Williamson.
Addington bets
Best: Republican Party (R5, No 8): Driven cold last start because he was fresh-up. Can afford to be more aggressive and should be too good.
Next best: Shan Noble (R4, No 3): Flew home last start and looks back to his best. Multi play.
Hot to trot: Harold Smith (R2, No 6): Comes in well and needed run last week. Headed for open class.