At this week, we should take an additional level to our betting game:
Will we hit 500TH/s before Friday - YES/NO?
I would say YES!

Personally I hope yes, but I would say no this time.
Custom board should bring us total 250TH/s and that's all. Evan Peta deploys all custom board before Friday, we shall see around 450TH/s there. There's no way to be 500 TH/s this week. Unless Bitmine delivers those rigs to us this week but that is impossible from now to see.
So I'd vote NO. Sadly, but that's true.