One thing to keep in mind is that the Lemur and Heron follow you when you restart your game. Things purchased with lavastones do not.

Example: You have 48,000 tech points, are level 2 in all techs except medicine, have 175 lavastones and 10,000 food when you decide to reset your game profile for some reason. You had also purchased the Lemur, upgraded one extra crafting basket, and traded some lavastones for a totem.

After the reset, you'll pick 5 new first villagers, have 0 lavastones, tech points, and food, only the basic crafting basket, and no totems. But you'll have your Lemur!