Problem Swapping armor textures

[NeoChosen]

So, I've been trying to swap in Black Trophy Jacket from Black ReTextures mod: http://www.nexusmods.com/dragonsdogma/mods/5/?tab=1&navtag=http%3A%2F%2Fwww.nexusmods.com%2Fdragonsdogma%2Fajax%2Fmoddescription%2F%3Fid%3D5%26preview%3D&pUp=1 for the vanilla Coat of Oblivion (eventually I'll replace the whole set, which I dislike, but I'm trying to understand how to do one piece first).

I've been trying to follow these guides on Nexus mods: https://forums.nexusmods.com/index.php?/topic/3743350-request-model-swapping-for-dummies/ and here: https://www.reddit.com/r/DragonsDogmods/comments/42iws8/a_guide_of_sorts_on_model_swapping/, but I am clearly doing it wrong evidenced by the frozen game whenever I attempt to scroll onto the Coat.

So far I've extracted both arc files , replaced the Coat's (7004) folders containing the maps with the Trophy Jacket's (7100) folders and changed the 7004.arc.txt to point to the Trophy Jacket's maps and textures. Finally, I repacked the arc and dropped it in my game folder.

As I said before, I know I've done something wrong because the game hangs when it tries to load the Coat, but haven't been able to figure out what I've done and would appreciate any advice.

TL;DR: Hate the Coat of Oblivion, tried to replace it with the a Black Trophy Jacket, read the guides, f***ed it all up, need help.

Edit 1: Sorted out replacing the CoO models with the Trophy Jacket models, but haven't figured out how to add the extra piece that isn't present on the CoO model (f_arm_b). Also, until I switch the Trophy chest (7100) to the Black ReTexture, both versions still show up as white, and both show up as black after I switch.

Edited August 28, 2016 by NeoChosen