Maemish,
the photo and video quality is adequate and you can email the photos to yourself.
If you have linux at home just apt install openshot and audacity for a great video and audio edit/splicer. I don't think a N900 could handle these under chrooted debian.
The pwnage the social media companies and Google take from you when they sell your data to everyone is a pretty good motivation to take back your life too. If you want to see how bad it is ask a private investigator or someone with the right kind of LexisNexis account access.