Aww they are both baby babies
I would ask all the questions you posted. I would also stress to them that you have a small dog and it's sex/age. Most of the time the better combo will be male/female. Male/male can work and female/female can work, there can be issues with any combo but male/female is least likely where female/female is more likely.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD