Couple of things that need clearence for me.

So I've planned on buying a legit Sims3 for 4 euro and since im not willing to buy the ridiculously expensive expansions, I've decided to pirate them. But....there are a couple of things I need clearence on:
1.It's gonna be Origin, ofcoruse since it's the only way to use pirated expansions. But if I install the game won't origin update it automaticly to the latest version? If yes or no, do the steps in the instruction thread need to be done on a fresh install?
2.I have a couple of games in my Origin acc, such as BF4/BF3, crysis 3, fifa and so basically things that I dont want to lose from a ban. Is there a hude risk of doing this?