Trainer and a former New Zealand cruiserweight champion Kyle Gallacher said they had been trying to get another fight before the tournament, but unfortunately two opponents had to pull out.
"He's been itching to get back in there."
Makatea-Leylander's last bout was the IKBF title victory over Porirua's Aaron Cole in a five-round bout at Springvale Stadium in March.
As well as conditioning, the key to Makatea-Leylander's chances, should he win the first bout in Hamilton, will be proper management of the down time between the two fights with rest and recovery.
Gallacher, who is a veteran of King in the Ring events where he fought three times in one night, will make sure the young man does "all the right stuff" to conserve his remaining energy.
"You've got to treat the first one like the only one.
"If you can save your shins and ankles, you do.
"He's got big hands and big hands are always a big weapon to have."
Kara has been preparing for his big championship opportunity since he won a title eliminator against Auckland's Tiasi Sheck (Arsenal ETK) at a fight card in Morrinsville in early June.
Wanganui Chronicle hopes to talk to both local fighters later this week.