Interesting especially since you had a I751 combo interview. Back when my wife interviewed for her N400, the IO had the I751 package (an inch or so thick) in front of her, we reviewed it briefly with her, and she did not ask to see any of the N400 interview evidence my wife brought.
Just an FYI, you do not need all that evidence to file the N400. Unless applying from overseas, or as the member of or the spouse of a military member, you only need to supply a copy of your GC (front and back), and a copy of your current marriage certificate (reference link, page 10). Many people when filing online also upload the required evidence to bring to the interview (reference link page 11), but you don't need to do that to apply. You can upload it later, or just collect it to take to the interview.
Good Luck!
https://www.uscis.gov/sites/default/files/document/forms/n-400instr.pdf