Kitchen Sink is meant to be a lot of everything, rather than just a little bit of everything. Tons of different dungeon types to explore, many enemies to face, tech mods to build with and magic to play with. Highly recommended to be played on a server, even if just for singleplayer.
Config file is left as default as different systems will have different capabilities for loading this pack. Spacing out world generation by 2-3x is highly recommended as even with making modded structure and entity generation, there is always something different to do with how much variety is available.
Mods like Oculus, Embeddium/Rubidium, Distant Horizons, Borderless Window and Shaders are highly recommended to be installed client-side. They are not included in the modpack itself for server compatibility purposes.

