Hello - I would say its more of a long term question dogs live 10-15 years ( sorry no knowing the breed chug?, thinking pug cross??
So the two days a week to be fair would be OK for most small dogs, if they are loved and walked lots but you sort of have to think am I going to be full time at any point, are we having more children, does a dog fit in with our house, area and life?
With dogs very much like children they always have to be considered but unlike children they are not always welcome at friends houses, holidays etc - so it's a different set of needs.
You sound like your not the type to rush in but it's tempting to get a puppy if you know the breeder and you've been offered one, again is it a breed you would choose anyway?
The training you would need to do would be tricky maybe with a 10mo old around, so dog training classes if needed etc, the cleaning up in the first weeks of house truing can be exhausting, they can get you up in the nights lots in the first few weeks, so it's as hard work as getting a newborn in the house and at christmas time it's tricky?
I would maybe be inclined if it's your first pup in the family to get one in the spring time, where walks are easier, clearing up wee at 3am doesn't seem so grim..
~ If DH is going to be around to help that's great but they do take lots of work.
I agree rescue dogs are fine for people who have had dogs before and know how to train them, and maybe have older children they are not right for everyone.