There are safer and faster alternatives to access the website rather than using the Tor Network. I recommend against using the Tor Network actually since it has been under espionage especially since the silk road investigation.
I do not support the Tor Network and do not plan on it.
Somebody owning a Tor exit node can sniff and modify any traffic. This includes of course also man-in-the-middle attacks against HTTPS connections. This is not only theoretical attack but used in practice, see
The TOR network is secure and all (Though I wouldn't trust it very much after the DaveC1 Debate)
However, in our case, having an .onion tld makes no sense, People can freely access r4p3.net through the tor network if they choose to, not to mention that we are already under several reverse proxy systems, thus routing our traffic through the tor network would simply add more useless connection hops (thus degrading user experience).
In conclusion, we don't see how an .onion version of our forum could be of benefit to us or our users at this time.