This is a tech based pack. You should use it as a sky pack, but you also can play it like a normal modpack.
Because of the included mods Botania and The Aether mod as well as the Twilight Forest and Thaumcraft this pack has much to explore, even for a sky pack. The mods AE2 and exnihilo as well as Tinker's Construck support your explorations with tech based items and systhems. The main goal in this pack is probably the Gaia boss from Botania, but you can choose what your goal is supposed to be.