I've been playing on the map the past few days, and here are some insights.
1. The first thing you should do once you make a pickaxe is to build a stone generator. However, to get the most of your pick's durability, you'll want to make one that can give you many rock blocks at once through the relieving mechanic. I came up with a simple obsidian generator that drops 5 obsidian rock at once when mining the center block. I plan to make a detailed video on the construction of this generator, but for now here's a picture. The important thing is that there are 5 blocks of flowing lava above 5 blocks of water in a cross shape. The water should have no other blocks surrounding it so once the center is mined, the other 5 obsidian rock will be relieved. The lava and water will then mix again to create 6 more obsidian. Occasionally, the outer obsidian blocks will generate before the center block, which means there will be an extra layer of obsidian you'll have to mine before taking out the center block to reset the generator. Unsure why it's inconsistent like that. Even so, this is the best design I could come up with.
2. Once you have a good amount of building blocks, setting up a hunting ground is a very good idea. Even a small closed-off grassy area can generate a ton of rabbits, foxes, or chickens when you're off doing something else. I underestimated how powerful this was as a food (and bone) source, and I definitely recommend making one before you run out of your starting food.
3. Finally, I used a lot of obsidian to create a drifter spawning platform at around y=85, as I found from testing that deep drifters will spawn here. Drifters are your main source of flax in the early game, and you'll need a lot of that. Once you build your obsidian generator you'll have an excess of obsidian stones, so killing the drifters with spears is a good use of resources. A more automated approach to killing drifters will be available in the late game, but for now I'll have to deal with the slow grind.
I hope this was useful to anyone wanting to try out the map! I've definitely enjoyed playing, as it gives me a deeper appreciation of the game's mechanics. See you in heaven!