I2pd + Qbittorrent is the best solution. Simple to setup and works great, the only catch is that right now you need to use the Qbittorrent alpha version (because it has i2p support) or just wait for the release.
Highly recommend experimenting with i2p, there's cool stuff on it as well!
And if more people join i2p to torrent the faster the speeds will get. You are a seeder of the i2p network basically. (Which is great!)
What are the alternatives?