Why not just use bittorrent then?
Discussion
its slightly more simple, and it works in web browsers. although I'm not trying to replace bittorrent, I'm just trying to stress test blossom servers and introduce the concept of pay-per-upload
Chunking and pay-per-upload have nothing to do with each other. You can stress test blossom servers & payments with large unchunked files.
Blossom is great for unchunked files, but chunked files should be a Merkle-based scheme.
Creating a poor chunking standard is just foolish and can raise the risk of delay attacks for large files. Merkle would be disappointed.