I am a bit concerned for you if you DO decide to get baby ratties. The reason is that it will just keep you emotionally and physically stuck in your apartment without getting out to meet new people/experiences.
I'd strongly suggest that you hit the pause button on getting any more ratties. I have hit my own pause button in getting new puppies/dogs because I wanted unlimited freedom to grab life by the horns unencumbered by responsibilities in caring for the puppy/dog.
Down the road I still plan on getting a puppy/dog. Right now, I love sampling what life has to offer me.