Multiple pages would not be an issue. I was even trying to find a way to (temporarily) put the other two children in a different family (e.g., Smith1 and Smith2), but then that caused a bunch of other problems with trying to keep the two families linked together.
I'm really not sure what to even suggest since that section of the report is "variable" and is in between two "static" sections. If it was at the end of the report, I assume it could grow/shrink accordingly.