Peter, 41, proposed to medical student Emily, 24, on New Year's Eve, just days before she gave birth to their daughter Amelia.
"We got engaged in January and we did say two years and it's been about nine months now, so it's not that far away," Peter told OK! magazine.
"I'm sure we'll celebrate in some way in Cyprus and we'll have all the kids doing something - it will be a really great day.''
As well as nine-month-old Amelia, Peter also has a nine-year-old son, Junior, and seven-year-old daughter, Princess, with his ex-wife Katie Price. But he doesn't want to stop at three.
The popstar revealed that he'd like to try for another baby with Emily once they become husband and wife.
''Ideally we'd get married first even though we didn't the first time," he said.
"But that doesn't matter. That would be the plan - for Emily to finish uni, get married and then of course have another baby.''
Peter previously told Parentdish that Princess and Amelia will be bridesmaids at the ceremony, but he had yet decided on a role for Junior.
"Junior loves the attention! I don't know how he'll be involved, I haven't thought about it, but he may well be the entertainment - he loves to perform, that's for sure," he told us.
"Princess will be a bridesmaid without question. The wedding will be a beautiful family affair when it happens.
"And because we're waiting a few years, Amelia will be old enough to walk down the aisle with us. Just thinking about that makes me happy."
Here's hoping Peter will also let his kids try their hand at fashion designing, and we'll see Emily go down the aisle in a dress adorned with children's drawings à la Angelina Jolie.
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