Kristine already has a handful of kids, but she looks like she's doing well! I like how you've adopted this challenge to work for you and how you've set up her home. I've done something similar with my legacy (the founder is immortal and aims to have 100 children), but I'm playing very very slowly with aging on and let the kids age up naturally. My sims started out with similarly humble beginnings to yours, but now they're incredibly rich to the extent where it seems like I've been cheating the whole time even though I haven't.