Quaife-Hobbs said securing the final part of his budget was the only remaining hurdle.
"That's what holding us back from signing a deal at the moment, but we're working on it and we're quite close," he said.
"There's less than half the grid signed at the moment so there's not really a rush. We've got another six or seven weeks until we have go to testing."
Quaife-Hobbs ruled out defending his Auto GP crown if he falls short on finance for GP2.
"There's not another plan because that's where we're aiming to be and it's where I need to be this year," he said.
"I definitely wouldn't be doing Auto GP again because I've won it. GP2 is where I need to be to get to Formula One."
The 21-year-old dominated Auto GP last season, and argued that his pace in GP2 testing proved that his 2012 success was down to his speed, not a lack of opposition.
"It's never easy. We might have had fantastic results when you look at the CV, but nothing's ever easy," Quaife-Hobbs said.
"I think that was proved when I went into GP2 testing in the winter.
"I was second at Barcelona with Addax and then I was third at Jerez with Arden, and I've never been to the circuit. Two completely different teams and the same result, against drivers that have been doing GP2 for a number of years."
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