here are a few options that I see but never actually use.

• contact https://wiki.archiveteam.org/; they have some reddit related archival activities going on
• more academic type and will be very helpful for researchers:
  • https://zenodo.org/
  • https://figshare.com/ (this I’ve used and very easy)
  • https://datadryad.org/
  • https://academictorrents.com/ (pushshift archives are also on here)
  • https://socialmediaarchive.org/

Your data don’t seem to be massive compared to the types of data people store on there. So I don’t think it’s gonna be an issue. Plus, if you deposit your data in 1 archivist place + 1 research place, the data may be used by more people. Don’t forget about licenses btw.

EDIT: added https://socialmediaarchive.org/ to the list, just found out about that.