I run qBittorrent on a server (with a VPN as the only outside connection) and use an open source app to control it from my mobile devices. It can catch magnet: links and torrent files and send them to qBittorrent via its API.
Just to clarify, you can attach one listener per IP and port tuple. This means you can have separate processes listening on, for example, 127.0.0.1:80 and 192.168.0.1:80.
Yeah, I updated the trackers based on this list: https://github.com/ngosang/trackerslist