"It's a good fight because Botha is very experienced," Parker added. "Plus he's still a durable opponent, he can still go the rounds as we saw with Sonny Bill. I need a good step up like this to see where I'm at."
Parker, an outstanding amateur for New Zealand, said he felt the need to improve the quality of opponent after all of his previous fights finished early. The fight against Botha is scheduled for eight rounds - Parker has never fought beyond five and that was as an amateur.
His longest professional fight - the TKO victory over Richard Tutaki - lasted three rounds.
He said he would probably travel overseas to spar in preparation for the fight which is guaranteed to be a learning experience and not only inside the ring.
Botha was his usual self at today's press conference in Auckland - full of bluster, even if some of it didn't quite hit the mark.
Wearing dark sunglasses at the downtown indoor venue, he called Parker "Baby Joseph", saying there was going to be a "demolition" and a "rude awakening".
"I'm sorry, Joseph, but most fighters lose the fight in the locker room ... you're not going to have your trainers or sponsors in the ring with you, you're going to be all alone with the Buffalo."
Botha made light of the accusations of performance-enhancing drugs-taking after the Williams fight debacle in Brisbane when holding up a athlete's drug handbook, although what that proved was hard to say.
Regardless, Parker took Botha's performance in good humour, suggesting when asked about the "baby" jibes that Botha could be his "uncle".
"He's actually a funny guy and I couldn't stop laughing at the table," he said.