Any singles with large sibling groups?

Hi, I'm a single mom with 2 kids (adopted as older children), and we're going to add to our family. We started out thinking about one, and then decided two would be better, but now there's a group of 3 in our state that sounds like a perfect match. Anyone out there raising 5 or more single handedly? I work, but can afford to hire help. Just interested in possible issues/thoughts folks might have. All the kids are school aged, but the new ones would be 1,3 and 4 years younger than my youngest. First of all, we could all fit in my truck, but we only have 3 bathrooms!