From the starting plan, you can only earn ~ 0.00144 BTC at 100% uptime. So that's pretty much a guaranteed loss.
Also, at 400 GH/s with your price, you would make -16.81 USD after the time frame. What's in it for us? I'm interested, but I don't see much profit :O
If my calculation is right, at 10% difficulty increase each round, the 400GH/s should bring in ~0.5 btc in 30 days with neutral luck.
Not on GHash it wont.
I have had 3 x S1's [540GH/s] + 20 GH/s [cex.io hosted] on there for 3 weeks solid and it is now down to 0.245 per/week from 0.315 per/week, and it has forced me to re locate my miners and this is due to GHash going from 27ish Ph/s to 36ish Ph/s in a matter of a few days, this driven my block share down from 0.00056996 to 0.00039996.
If we arn't careful GHash will take over the world