awesome. Yeah you will need to get yourself 15K grain from the P2P market to feed your workers for building your grain farm. you dont need that for 12 days. Just make sure you have it in your region when you go to "finish your build" or if you want to add or change another worker.
i'm sure you can hit up a guildie for market price grain rather than trusting a stranger on the forum.

so far i have put workers in 12 plots i think? and another 11 or so to go.

grain is a good start.

have fun!