What do you mean by two sets of Mitzvos? It says to eat in a Succah for seven days, and it says not to cross the boundary of your friend. They are both in the same Torah. However, Middos are not explicitly commanded in the Torah in specific form. That is because they are for our relationship with this world, whereas the Mitzvos are Amok Amok Mi Yimtza’enu. Ribbis is not dictated by human morals, and Geneiva is much worse than the fact that your friend is now unhappy.
We are required, of course, to be good people in every sense of the word, as it says, Ve’asisa Hayashar Ve’hatov. Therefore, regardless if a specific act is Assur or Muttar, we must act according to what is appropriate.