Torrenting over TOR is not a great idea. The speeds will be abysmal in addition to putting undue strain on the network. This is not what TOR was designed for.
Tor is fine for finding content. Dowloading can be done the usual way.
The site itself is pretty lightweight; the actual torrenting is done through p2p.
rutracker uses standard internet magnet links for the torrenting itself. They are just an indexer. There is no tracker nor downloads from them.
It has tracker (of course, torrents can work without it, using DHT).
or even better make torrenting over i2p
So you must register a domain through a registrar, thus giving you less privacy?