I started my tribe as follows:

a 24 year old male with some building exp.
three nursing females, 21, 19 and 18 and
an 11 year old male.

I immediately put my male to work on the LH and kept my child busy with collectables and mushrooms and then held my breath for two Isola years hoping my useful adult didn't get sick. Thankfully he didn't. After the love hut was finished, I then put him to work researching until the three females were ready to work. I put the 2 younger females to work at research, bred the oldest female and put the male back to building the first of the living quarters. After that I just kept rotating the females having babies so at least for the first 14 Isola Years I always had workers. (The worst problem I had was that my first five children were females)