What does that sportsbet has to do with yout house? Don't tell me that you play and feed yourself/family from it.
It's not a fully safe despite the fact that they have grest website, interface and etc. If you see red trust on their main account here, you'll see some reasons and that reasons don't come from sky. Once they did it and got red trust, maybe they'll do the same for higher number of bitcoins?
Youcan try onehash too, not sportsbook but something similar.