Modpack Advice???

Can yall recommend me a modpack with:
- Planet to Planet Exploration (Ad Astra, Galacticraft, etc...)
- What the Player does affects the planet if not managed properly. Sorta like how if Nuclearcraft power and radiation isn't managed properly it can make surviving in irradiated areas difficult/harder
- Tech Based (sorta MeatballCraft/GTNH style)
- Preferably on 1.12.2 or older
-
Sorta a kinda pack where you can progress quickly/fast/whatever pace you want but the surrounding environment is very sensitive to mistakes. Stuff like reactor meltdowns/mismanagement of radiation, incapability to survive external danger, etc... can make it very easy to make you need to/prefer to swap location or maybe move off-planet to another planet/dimension.
I get how this could sound tedious..., 1/2/3 small mistakes and youve suddenly got to adjust or consider moving your base however I feel too many packs let the player off too much.

I really like the NuclearCraft Radiation, Immersive Engineering Pollution, GTNH (biome) Humidity, etc... like mechanics but I feel such mechanics are really underused and keep too many packs wayyy too easy... (personally)