Cadee was born and raised in the Sydney suburb of Greenacre. He attended Westfields Sports High School in the nearby suburb of Fairfield West. He graduated from Westfields, a sports dedicated school, in 2008 and was later named in the school's Hall of Fame.

Cadee began playing for the Bankstown Bruins men's team in the Waratah League during 2008, making four appearances and scoring seven points. The following year, he moved to Canberra to attend the Australian Institute of Sport (AIS) and play for the program's SEABL team. Over 18 games for the AIS in 2009 and 2010, he averaged 12 points per game. He also played 10 games for Bankstown in 2010, and with a 20.5-point-per-game average, he was named the Waratah League's Australian U/21 Youth Player of the Year and earned All-Star Five honours.

On 10 April 2010, Cadee participated in the Nike Hoop Summit for the World Select Team where he recorded seven points, three rebounds and three assists in a 101–97 loss to the USA Junior Select Team.

Cadee also played for the Australian U19 national team at the 2009 FIBA Under-19 World Championship, where in nine games, he averaged 9.1 points, 2.3 rebounds and 1.9 assists per name.

On 29 April 2010, Cadee signed a two-year deal with the Gold Coast Blaze of the National Basketball League. However, just two months after signing with the Blaze, Cadee was involved in a car accident on Sydney's M7 Motorway. A semi-trailer had veered out of its lane and pushed him off the road. His car went into a spin and parked itself at right angles across one of Sydney's busiest highways. In an instant, Cadee was crumpled against the middle console of the car. After being trapped for 90 minutes, somehow, he escaped with just a broken pelvis. This broken pelvis, however, delayed his NBL debut and forced him out of the 2010 Australian Boomers squad.

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