Personally, when I got my yorkie poo, who was my first ever dog, I was glad I only got one. About 2 months later, we added a second dog.. but I needed that time to learn and get more experience about how to care for a puppy.
If you asked me now that I've had 4 dogs and all are still puppies -- I would say I can handle it. But there are day that are overwhelming with two.. when they chew the moldings on the wall as a team effort, when they still have potty accidents in the house, when they won't walk on leash nicely and I have to do seperate trips.
I really think it depends on how much time you have and if you have the ability to train two puppies. Also, two puppies means two of everything which can be financially straining in some cases and double the vet bills and double the training classes.
I think it would be great for the puppies to have each other, it just depends what you can realistically handle at one time