Six might be the perfect number forKanye WestandKim Kardashian West‘s immediate family.

“They’ve always talked about wanting four kids: two boys and two girls,” the insider explains of West, 41, and Kardashian West, 38. “That’s always been the plan.”

“They definitely want a boy,” the source adds of the rapper and reality star, who are already parents to daughtersChicago, 1 this month, andNorth, 5½, plus sonSaint, 3.

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Kanye West and Kim Kardashian West.Taylor Hill/FilmMagic

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Kim Kardashian Instagram

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And although Kardashian West has made it clear that she loves being a mother, in August, aKeeping Up with the Kardashianssource told PEOPLE that she and West weren’t “in a huge rush” to give their three children another sibling.

“Theydon’t seem to be in a huge rush,” the source further revealed. “They would use the same surrogate if she agrees to help them again. Kim can’t say enoughkind words about the surrogate.”

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Though Kardashian West has been candid abouther fears surrounding surrogacyand how she thinks it“is so much harder” than pregnancy, she opened up in May about how it ultimately was an overwhelmingly positive experience.

“I would have maybe one more [child],” she admitted. “I really, really enjoyed the surrogacy process. I will say, when itcame to the breastfeeding time, I was like, ‘Okay, this is the best decision I ever made.’ ”

“I don’t think I could handle more than that. My time is spread really thin,” Kardashian West admitted. “And I think it’s important that in all couples, the mom gives the husband as much attention as the kids.”

source: people.com