It definitely does take up more time. It really depends on how the two dogs get along. You also should have a lot of time the first about probably month that the two dogs are introduced.
I would say your probly getting her in the habbit of going three times a night by taking her. Trying cutting back to 1 time a night. I could be wrong though. Good luck! :)
I personally would never buy from a breeder. All those dogs are going to sell but the ones at the pound might be killed. You can find a good puppy at the pound :)