No probs! I totally get it. For the first few days, I kept asking myself if I made a mistake. It was awful seeing Scottie depressed and withdrawn. Each day lasted forever! I think he's very similar to your second. 
 
Fun fact - your first has the same May 1st birthday as Scottie lol!  
I also got my second from the same breeder. I think if you get a third, it'll work out. You just have to be strong during the initial stages of it. And you'll have to spend extra time to help them bond. I found that training them together in the same room helped Scottie. This was day 3. He then realized when she's around, things were still good and he still got treats. And then obviously, having to spend time with each of them individually.  
Casey is really confident and sure of herself so it works out well that when she's around I'm able to give Scottie lots of attention and back scratches without her getting jealous. It's only when I leave the two of them playing on the floor (while monitoring them) that she bullies him and steals his stuff. She's still learning though. Scottie and I are both teaching her to be less bossy. It's really tiring but still fun 

 Especially because she's just so cute!