Looking at 3D

I decided to look at some 3D. I've currently been following the nehe tutorials that come with the DevkitPro. For the bullethell I looked at Relminator's source.

At the moment I'm trying to find out how to best manage the textures and palettes. The built function from libnds (from what I can tell) want you to load most textures and palettes at the start where I want to be able to load and unload textures whenever needed. Maybe they're in there and I just need another look, if not I'll have to write some for myself.