If i were confident I wouldn't have sold most of it for nothing.

But 500k is a huge buy at 2,000 sat for a coin which was 70 sat not long ago.  seems crazy.

Something is going on, the price has gone up like crazy with zero pumping.  That's rare so I would risk a few BTC here but I wouldn't risk 500k at 2,000 sat.  Then again, if I had a ton of BTC I would so it depends on how much one can afford to risk.