But while that changes Bosson's tactics it doesn't change his first task, making the 54.5kgs.
"I have made it the last two years for Melody Belle and Avantage and it is a bit easier now I am fit," he says.
"And to be honest I have hardly eaten a thing the last two weeks because we first moved house and now Max has arrived so the weight won't be a problem.
"But I will be leaving any celebrating until Saturday night, probably even Sunday." While the arrival of a little Bosson into the world trumps anything that could happen at Ellerslie on Saturday, Opie kept up with yesterday's barrier draw on his phone and wasn't impressed.
"It is not a good draw, especially at Ellerslie because the 1200m there is one of the hardest places in the country to overcome a wide barrier draw.
"She is a filly who might have got back anyway but from a better draw she could have been three or four spots closer.
"She now faces a huge task, no matter how good she is."
Inside draws have been gold in the previous 11 Karaka Million juvenile races but barrier 14 has been overcome before, by Vincent Mangano in the very first running of the race.
But with now favourite Whiskey Neat drawn ideally at barrier two and looking a likely leader, Probabeel should be giving him an awfully big start. While Bosson had other things on his mind yesterday trainer Jamie Richards was left wondering what he has done to deserve his lost month of feature-race draws after Melody Belle's horror run with starting positions in the Railway and Telegraph.
"We have three of our good chances drawn 12 or wider for this race, which is not a lot of fun," said Richards, who has five in the race.
The flipside to Richards' emotion was Cambridge trainer Tony Pike, whose barrier-drawing morning could hardly have gone better.
Not only did Whiskey Neat get the perfect marble but his emerging three-year-old Surely Sacred looks well suited by barrier four in the $1m Karaka Classic, the other mega rich race on Saturday's twilight card.
That saw him into $5 second favouritism albeit somewhat tempered by the fact the country's best three-year-old so far Madison County has drawn well at barrier seven.
Hypnos also got a good gate with barrier six in what looks a stunning race but 1000 Guineas winner Media Sensation faces a massive task with the outside barrier in the 18-horse field.
She headlines an extremely strong fillies presence in the race with Eight Carat Classic winner Pinmedown, Royal Stakes winner Imelda Mary, Queen Of Diamonds who won the Eulogy Stakes and the unbeaten Miss Labasa also flying the female flag.
Karaka Million
• What: New Zealand's richest horse racing meeting.
• Where: Ellerslie
• When: Saturday, first race 4.44pm.