Once block 180k passes, which at this rate might be about 12-16 weeks (maybe more, maybe less, just a rough guess based on progress so far)

Until then, masternodes can be set up, but don't get rewards, so you will see them SYNC, but don't need to fear that you are losing out.

This delay in Masternode enablement is not a bad idea, as it helps decentralization of the coin, and lets a lot of people have the opportunity for a node (you could mine a node with a Celeron right now in about 4 weeks. With a good PC it takes less than a week)

It also avoids the possibility that the Devs will sell nodes in the future and then run with the money, as just a small amount of mining will get you a node on your own, without spending money.

I kinda feel that if you're mining another coin on GPU, you may as well set a few cores to CPU mine Geek at the same time.