@mcrudd came across your thread because of the name "a different 100 baby challenge" I want to do the 100 baby challenge after I finish my current challenge "endure the trials" by @Drbigt (fulfilling all the goals given in the game options)
and I like your more relaxing way to do the challenge. I want playing Sims to be relaxing as well and not being stressful.
Have fun with your challenge! And I hope you will post more pictures while you continue. Kristine's house looks nice. The babies have a nice environment to grow up in.
One question: what will you do with the sims after they moved out? Let them sit in the bin forever, delete them, use them as unplayed sims in another challenge or new save, or....?