A way to choose a different endpoint only for uploading files.

[mrwrenchy]

So, I ran a zipline instance and didn't want my public IP to be exposed so I enabled cloudflare reverse-proxy (proxied intead of DNS only), but on free version of cloudflare, there is a max limit of 100mb and anything above that is not uploaded and cloudflare gives a 413 error saying entity too large, this was fine since we can just chunk the uploads.
But, when I tried uploading multiple files, each file being 1-20MB max, it seems to upload all of them at once instead of one by one uploads and when it hits 100+, cloudflare will block this.
I can think of 2 fixes for this:

1. Upload each file individually instead of batch uploading them (essentially making them pass the 100mb limit, and chunk each file when mass selecting more than 1 and its above 100mb limit).
2. Allow us to select a different domain as upload endpoint globally for all users and all uploads, like cdn.mydomain is the main website, upload.cdn.mydomain can be selected as upload endpoint which we can just do DNS only through cloudflare and skip uploading to cloudflare entirely.

Here is what I mean:
Uploading multiple files all less than 100mb but combined 104mb
http://cdn.wrenchy-is-dev.co/%F0%9F%91%85/3CkT7B.png
While uploading, everything is on the same post request and fail since cloudflare will block it
http://cdn.wrenchy-is-dev.co/%F0%9F%91%85/dQL4pA.png
Request failed by cloudflare:
http://cdn.wrenchy-is-dev.co/%F0%9F%91%85/mj4QOG.png

Also I don't know If I should even do this? i.e proxify using cloudflare.... There is nothing wrong with doing this right?