Either is fine. A few days one way or the other will not make or break a good puppy. I would assess your situation and the breeder's situation. If you feel the breeder will interact with the puppy and play with it, and start house training, etc, having the extra 1/2 week there will be good. If the breeder is working full time outside, or has a lot of dogs or another litter to manage, getting the puppy 1/2 week early will be just as well.
If all other things are equal, but you have an open house or out of town company this weekend, wait until next weekend. If this weekend will be calmer and more stay-at-home, then bring it home on this weekend.
These are the things you want to consider on when to bring home the puppy.
Good luck with your new addition.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC