Want me to PM you a list of the cheats and the ones I find best? Or most fun?
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If you want to add your two Sims to the Spam Sims I'd recommend going onto the main menu and starting a new game. Any newly made Sims are added to a Sim bin of sorts, basically copying them and allowing you to paste them to your heart's content. Add them both in the new game and then make the new Spam Sims, then make them join the first two. Your other game is preserved and you also get to play them all in a bunch.
testingcheatsenabled true is the best cheat.