Mod Installation Order and TGA vs. TPC files.

[JasonRyder]

I'm using the KOTOR Widescreen Mods and the Ultimate Character Overhaul Mod, and I noticed that some versions use TPC files and others use TGAs. I tried using those mods with some other texture mods like Heyorange's Sith Uniform Reformations and some other texture mods that mostly use TGA files. I find that installing TGA-based texture mods AFTER UCO mods, the TPC files take priority. Should I install the entire KOTOR Ultimate Series with the TGA versions? They take longer to download and unzip. 

Also, do I install K1CP first or UCO first? The mod page for UCO says to install it first THEN K1CP, though most mods ask you to install K1CP first.