I wanted to do this long time ago, I even started building a world for this challenge (I read the rules on official Sims3 forum, some girl modified them for Sims3), but then Dynasty started and I postponed it.. You can fit car under the house (is it 8x8?) also, you can work out with cheap stereo/radio.. evil restriction is demanding and annoying, so I understand why you don't want it. I'm interested to see your strategy and how things develop.. Good luck!