Not a big fan of bear minimum filings. RFE slows down the case. Adjudicator potentially asking for more evidence prolongs the interview, and my goal was always be in and out of USCIS building as fast as I can.
I'd submit everything I can in support in marriage based N-400.
It's free when filing online. It's not resulting in spending money on printing or shipping bigger packet.
Building a strong case pays itself off.
I was a 5 year rule filer. Some on VJ said uploading 5 years of taxes was unnecessary and excessive. Even my lawyer said I didn't need to upload it. I insisted on it. Case got processed in 3.5 months.
Before interview, I was going over and over my travel history. As we were waiting, lawyer said don't worry, they rarely go into details of travel. But in my interview they did.
Sometimes whatever you feel is the right thing to do, is the right thing to do.
Good luck!