Adopting a new Puppy

[Shanmom24]

So 3 years ago my hubby and I rescued our Pit/boxer mix cody from a crack den( technically we paid 25$)
Now we really want to adopt a female APBT this month( when she is 8 weeks).
Cody has been raised along side our 4 kids ages 7,5,4, and 3 and he loves them as much
as much as they love him. Cody gets along well with my moms dogs and is super friendly.
I'm just nervous about how he'll be with a new puppy in the house, does anyone have advice and or experience with
this situation? Thanks Shannon