Arcane Skies is a no-tech skyblock modpack. You start out with a modified Ex Nihilo to collect basic resources. This leads into Botania to collect more valuable resources, and then Agricraft/Mystical Agriculture to ramp up production. After that, there's plenty of magic and adventure mods to keep you busy and give you exciting things to do.
This modpack is completely no-tech. There are no RF generators and no machines which use RF. There is still plenty of automation options available, they just require a bit more creativity.
This modpack uses advancement-based progression to help guide you through the pack.
Be sure to use the world type 'void'.
This modpack is in beta, but it's a complete modpack and I've played it through its entirety. I just need more players to help test it so that I can eliminate as many bugs and issues as possible.
Issues, bugs, and suggestions: https://github.com/jaminvanderberg/Arcane-Skies/issues