The Sims 4 Three Little Sims Challenge

Uh oh, I think I'm going to have to start over. I just re-read the rules and realized I've broken several of them. I allowed my controlled Sim to use whatever facilities were available on the lot, rather than just using the stuff in his own house. I did not keep track of their finances individually -- I pooled all their funds. And I think I'd like to impose a time limit -- 8 weeks sounds about right.

I assume each house must have it's own bath, kitchen and entertainment (TVs, stereos, computers, etc.). Is it ok if there is a common eating area, say a picnic table out in the yard?