I’ve done a bit of a rabbithole-less world - a rebuild society challenge. I did a “place a rabbithole at certain economic status points. The first rabbit-hole was set down at 1 million simoleons the second at 2M and so on. All they could do was collect rocks and seeds to earn that money and sell out of one’s inventory.
The first day was the hardest. They were near starving before they found the first tree to eat from and it was a full 24 hours before the first seeds spawned so they were hungry as all before they managed to sate their hunger and plant some “renewable resources” so they could eat.
I might take it a step further: no rabbitholes ever and essentially only put down a register (kind of a “wandering trader” - consignment) where they do all their transactions to make money.
I generally started those survival/rebuild society games on an “empty world”. You can find those relatively easily by looking for “builder’s worlds” (note: you need to install these worlds like you would a store world - generally) These are cut down worlds that will have nothing placed in them for ease of loading and building. Some will have trees and other things in them but a variety of different-sized empty lots (that’s why it’s called a “builder’s world”) You may have to go around placing plantables (yeah it sounds like cheating but your sim has to eat) And drop a few seed spawners - all those are in buy debug.
All in all, what you’re planning sounds like a fun start to your game.