Still on starter island

I've been playing 2 days after the game came out. My starter island is so large I'm still there. I don't even think I've explored half yet; just about. I have swamp and mountain biomes there too. I ended up looking at the world generator to see how big it is, and saw these.

Beside my second boss being located on some island I need to sail to, am I missing anything not going to other islands right now? I'm still in Black Forest trying to upgrade everything as much as I can before I go to that boss. Trolls and bears are pretty easy for me now.