But it is the Black Caps all the way, no matter who they play, he said.
His message for NZ team: "Go the Black Caps, and go Trent Boult and Kane Williamson give us plenty of sixes and fours," he said.
Dad Tony, who turned 35 yesterday, said the Black Caps making the final was an awesome birthday treat, but admits to being a nervous wreck watching the final overs at home.
"Kale was far calmer than we were, and when Grant Elliott hit the winning six we all jumped for joy.
"It's the best present I could ever wish for, and watching the guys play in the final is going to be beyond my wildest dreams," Mr Wellington said.
He said he booked tickets to the final 18 months ago, and has seats three rows from the boundary fence in Cow's Corner.
"I'd like to see Australia in the final, as they are the ultimate rivals and to play them at their home and beat them would be absolutely awesome."