Money will not break game, cause I did that already. Didn't had patience to deal with low earnings/astronomical prices acrobatics. And even that only for car. It must be lada, considering how much fuel it consumes. Money for other stuff, as food, make up, books, items, etc I earned through "legit" ways.
Funny fact, dev insists about "realism" in that department, but when it comes to refusing lesbo actions in order to advance certain quests - there is no realism, "it's unrealistic" for players to be able reject other girls. Speak about double standards and hypocrisy...
Everything else I played as it was intended. Skills, lessons, relations... Hell no, that lessons grind will not repeat. Cheats only.