Does anybody have a package full of JK2 Textures that I can experiment with for mapping? I cannot seem to find any.
The games, JO and JA, ship with huge packages of JK2 textures. You can readily experiment with them. Otherwise it's a logical impossibility to find packages of JK2 textures, as basically only the original ones can be called that. You might be able to find Star Wars textures elsewhere, though. Some custom level readmes also grant you the right to use their custom assets in your own projects.
I couldn't find any coruscant textures in my texture window, or perhaps I could be blind lol.