Scotland face a crucial World Cup qualifier with Norway in Oslo on August 12 - four days after the Championship begins.
The SFA were successful in their quest to delay the start of the Clydesdale Bank Premier League season until August 15 and chief executive Gordon Smith then vowed to ask for co-operation from clubs in England's second tier.
But that is unlikely to be forthcoming and McCormack is eager to start the campaign as Cardiff bid to make a good start to the season following their spectacular fall from the play-off positions in the final weeks of this season.
"I want to play the first game of the season for Cardiff so hopefully I can come through it injury free and then join up with Scotland," McCormack said.
The 22-year-old can expect a starting slot in Oslo after his impressive displays in the previous two games, against Holland and Iceland.
McCormack struck the opening goal in the 2-1 win over Iceland, which kept Scotland's play-off hopes alive.
"It's in my own hands," the former Rangers and Motherwell striker said.
"I've got to start the season well down in England and then do well in training and hopefully get in the starting 11."
McCormack is likely to remain at Cardiff this summer despite speculation linking him with a move to the Premier League following his 23-goal debut season.
"I'm speaking to them just now about putting another two years on my deal which will mean a four-year contract," he said.
"We're trying to iron out a few things and we will see what happens.
"I'm still only 22 so I've got a lot of time to move on up the divisions and go to as high a level as I can."
McCormack refused to rule out a move if the opportunity arose though after boosting his confidence during his first season in Wales.
"Everyone in my shoes will be the same, if they get the chance to go to the Premier League, they would snap at it," said.
"I think this season I've improved night and day. Last season I was playing for Motherwell and Scotland Under-21s and doing well, but going down south and playing against different teams every week and international-class defenders has made me a better striker."