So there are 600,000 premine coins ? 5.3% premine ?
looks like 300 000 premine to me. How did you see 600 000?
To make things clear and to not have any FUD. Here are the details,
Premine was 300,000 coins, we have roughly 200,000 coins remaining after bounties. We have spent an additional 1.8 BTC in other community bounties.
Proof of stake starts at block 2881. Minimum stake age is 1 hour. No Max age.

I will also update this in the OP. Thanks