Worth it.You need every part.
And yeah it's 32 GB because there the game, the official DLC, the official extra content and about more in fan made mods (from essentials like translation & uncensor to 50 times more clothes, haricut, accessories.... than Illusions created).
And if you wanna download all the avaible extra content for the game through the update tool, you'll get a game about 80 - 100 GB in final. And more like 250 GB + if you grab all the extra content for the studio.