I mean, I might be missing something, but I haven't played with the total mod build yet - just RCM and PS. I'm not sure what might be causing it, as I've had to double and triple check to make sure it was actually working properly multiple times.
... You're not getting the item when recruiting Disciple...? That literally makes zero sense. Unless the wrong script is firing, or it's been overwritten by something else, you should be receiving the item - it's the whole point of the mod.
Try the attached. Fixed the lazy left eye, increased the pupil size, switched the head texture to TPC (with added vanilla clamp TXI data), and swapped the body texture fix to the one K1CP uses (i.e. adds the envmap TXI data). Also edited the readme accordingly.
Darth_Tempust_Improved_Bastila_Head_Edited.7z