Personally the music was well worth the download frustration in the end, but I would recommend the built in itch.io hosting if you are able to use it. Web app has an upload size limit as you said, but I think if you use that Butler app to upload, you can put files on there that are quite large so size shouldn't be an issue. That could have changed since last I looked but if still true it should solve file size issues. If you upload a zip file, it'll be quite accessible then I feel. I think it's free? That would be great if it's easy for you, it'd be easy for us customers. If it's size limit has been reduced in recent times, then there aren't a lot of great options that are free unfortunately.
If that ends up being the case, Google Drive is fine, in my case I just have to click and wait a while for it to go, 1-3 files at a time (in case this saves anyone else some time, it was quicker to DL once I figured out a method).
The music is like, higher than 5 stars if they'd let me.