In the latest Closer Weekly cover story, a friend of HGTV’s Chip Gaines and Joanna Gaines, Jimmy Don Holmes, talks about the super couple’s biggest reveal yet: baby No. 5!

“Think about how lucky they are to have a fifth child and how lucky the kid is to have them,” Jimmy, whose JDH Iron Designs business is featured on Fixer Upper, tells Closer exclusively.

“Can you imagine the nursery? I’m sure Joanna’s run it through her head 6,000 times how she wants to do it. And knowing Chip, he’s probably got 3,000 names for either a boy or a girl,” Jimmy adds, teasing, “though Joanna’s probably not going to want any of them!”

Jimmy explains to Closer why Chip’s paternal instincts have won him a lot of respect back home. “His dad was a good dad,” Jimmy says, “so that primed Chip to be a superdad! And his father-in-law is one of the most amazing guys in the world, so Chip’s got a lot of guidance. But he’s a natural anyway.”

And Joanna is a model mom who wins equal praise. “She’s just so kind,” Jimmy tells Closer, adding that she will literally drop her professional duties to spend time with her children. “She’ll just sit down in the grass and talk to them for 40 minutes, even if she really didn’t have the time to do that.”

Jimmy, adds that “they just want a healthy baby” to join their family, which already includes kids Drake, 12, Ella, 11, Duke 9, and Emmie, 7.

For more on Chip and Joanna, pick up the latest issue of Closer Weekly, on newsstands now — and be sure to sign up for our newsletter for exclusive news!