This is the best shot I got of the island that the seed holds. It's a pretty big island that's perfect for a town in my opinion. And if you make a bridge heading towards the mountains [or in the case of the screenshot, towards the camera/golem], you'll be pretty close to the wall to start mining away into it. Plus, the island itself has a good supply of trees, and berry bushes for an early food source.
3/23/16: Added a map, and an overhead of the main village. Word of advice: If you don't want land eating camps appearing on the island, begin building roads as soon as you can.