Glad to see that the launch happened smoothly with no major problems.

Just a few questions though:
1.) I have a NEM private key and address. I looked up my address on the block explorer and all my coins seem to be there. Is there a timeframe in which I have to enter my private key into the client or can collect my real NEM a week/month/year from now? I assume it's the latter?
2.) Why does it say "Status: Locked"?
3.) Can I start forging without doing any transactions? Just the NEM sitting in my account from the genesis block? According to the block explorer, my importance score is 0.1%. Is this good?
4.) Is Poloniex the only exchange that NEM is currently trading on? I only bought 0.1 NEMstake which means I only have 225,000 coins and I'd like to bring this number up to 1,000,000 eventually.