The world has been generated 10,000 blocks in each direction. We’re running the default pack, so no need to add, or enable extra mods. Though you might want to grab fast craft from over here. It’s meant to improve performance, and expected to be included in future packs. It is not right now because it is still experimental.
The exported full-size image of the map is 495MB! I’ll make that one available soon if there’s some demand for it.
Remember this pack is still early BETA. There will be bugs! Some of them crash the server, some crash your client. We’ll be banning the items that do this for now, and making them available again once they’re fixed. Known items are displayed by using the command /help banneditems.