Just be aware of the caveats of the IRC gateway - it's somewhat frusrating trying to use both it and the web UI at the same time since messages read on IRC aren't marked as read immediately (it's the nature of the medium). There are also plenty of reports of messages on the web UI just not appearing at all on IRC, or vice versa (depending on the origin of the message).
So it can certainly hold you over, but just beware.
I have a library about 90GB in size currently, spanning about 12 years. I've played with all kinds of options, but I have a problem - I'm married to a luddite. My wife just doesn't get online storage and doesn't care about accessibility. She just wants to know where the most recent year's worth of photos are so that she can post to Facebook and create photo books.
After toying with Dropbox, Amazon Photos, Google Photos and a host of others, what I ended up doing was connecting a 1TB drive to a Raspberry Pi, then setting up a Samba mount on the local LAN. There's a read/write "dropbox" folder where we can upload photos manually, and I have a Python script running out of cron that sorts everything into date-based folders (https://github.com/andrewning/sortphotos). The date-folders are read-only on the Samba share.
I also have Dropbox configured on our mobile phones. Photos can be auto-uploaded to Dropbox, and I have CLI scripts that download them from there, and move them into the date-folders. The Python script de-dupes everything, and I move "duplicates" to an S3 folder where they're either purged after 30 days, or I'll review them to double check something wasn't ignored by mistake.
Everything on the 1TB drive is synched to S3 weekly, and moved quickly to Glacier. I also have a secondary 1TB drive that I'll sync to the master on a monthly basis.
So I don't get on-the-go access to my full photo archives, but I can move what I want to Amazon Photos if I really want something, and I've got enough redundancies to make me feel like I won't lose anything.
So it can certainly hold you over, but just beware.