This is a lightweight tech/magic pack, without much customization. The focus is mostly on bringing a set of qualitative mods that run well together on older hardware (i.e. 4GB RAM needed to run the game).
There are plenty of options for power generation, storage, automation and processing. On the tech side most of the big mods available for 1.21 are included. On the magic side it is more opinionated but there is still enough to choose from. For a different approach to automation, you can act as the mayor of your own colony and have others do the work for you using Minecolonies.