No such thing as too much evidence.
Most likely, you won't need all of it, but you'd have options. Most of the times, when officer sees a lot of evidence brought to the interview, they won't ask for it at all, as there is no point to waste time.
6 months of statements is nothing. I brought 5+ years of statements, utility bills etc to my N-400 interview. It just needs to be organized well.
Tip for the future: most banks and utilities send paper statements if you prefer, for no additional charge. I just collected these statements in a box until I became a citizen. It's easier than printing hundreds of pages.
Good luck!