Kardashian "wants her kids to be close in age," and West "wants a huge family."
Apparently the couple already has a timeline when it comes to their second child.
"She'll try to get pregnant next summer, after the wedding," our source continues.
West proposed to Kardashian on her 33rd birthday on Oct. 21 at San Francisco's AT&T Park with a giant Lorraine Schwartz diamond ring, and has already hinted that their nuptials will be quite the spectacle.
"Two words: Fighter jets," West teased in a radio interview on Oct. 28.
The opinionated rapper is currently in the middle of his Yeezus North America Tour, which wraps on Dec. 23 in Toronto.