Not sure which dog to adopt?

I volunteer at the local humane society. There are two little guys who I have fallen in love with, however, my husband will only let me adopt one since we already have one dog. Both were born in a puppy mill and were brought to the humane society. One is a pomeranian chihuahua mix, the other is a cocker spaniel poodle mix. The dog that we already have is a pomeranian poodle mix and was the result of BYB, no one would buy him so they brought him to the humane society. He was sick and needed constant care so I adopted him and nursed him back to health.

I have a seven month old daughter, and am not sure which mixed breed would be best suited for my home. I also have a six year old cat and two chinchillas.

Any insight or advice would be much appreciated.