Welcome to YT!
I am sure you will get a lot of feedback as there are a lot of very knowledgable folks on YT. Hopefully any issue you encounter someone will have a helpful suggestion or recommendation for you. We are all here because we love our furbabies and want to see them happy and healthy.
Your vet will be a great source of info regarding needs of your new little baby. Between you being home most of the day and having another puppy to help her learn some puppy behaviors, I think she is better off with you than with anyone else that would have stopped by to look at her.
I got my previous baby, Poppy, when she was 8 weeks old. She was great and grew into a wonderful dog. She was such a good pup and had the best demeanor and personality. She was a little needy for the first few weeks - it was just the two of us, so I slept on the floor with her on a pallet of blankets and she curled up on the pillow by my head. You have another pup for her to snuggle with so she should be okay. Poppy grew up spending lots and lots of time with my friends cocker spaniel (he lived with us for 6 months right after I got her) - she was very well socialized - and they played together for years.
I made sure I had nutrical on hand (as I have with my two new babies). I gave Poppy a little bit several times during the day and night to make sure her blood sugar did not drop too much. I just gave her a tiny bit - she loved it so thought it was a great treat. (none of my pups have liked the GNC brand - must taste odd to them).
Sorry to disappoint you for not being negative or critical of you. I wish you only the best and look forward to seeing lots of pics and posts about your new babies. Good luck in the weeks to come - you may want to have some extra coffee on hand in case you have some long nights