Will keep this in mind for the next project, still learning here and since all is already on the board. I would keep it like it is for now.
As for the display, according to the description from the CN shop, the input is 3.3V, however, every other pin should accept 3.3-5V. During the assembly I added some simple voltage dividers to the board, but the display wasnt working although the dividers were working and thus I disabled them at the end.