Besides archive.org, exhentai hosts scans of non-hentai anime magzines/doujinshi like Newtype as well, so you could always upload a gallery there. Nothing wrong with throwing a torrent of the scans up on nyaa either. If you're specifically thinking about cleaning up the raw scans before releasing them [not TL'ing, just mild cleaning] but aren't sure where to start for automation then it might be worth asking around in scanlation communities about automatic Photoshop actions for color leveling/rotating + cropping, I've heard that those are viable nowadays but don't know the details. Either way best of luck, I have some stuff sitting around that I've wanted to get into scanning for myself.