It is fully configured just replace everything in your WoW directory and change Account name to your account name in WTF (warning this will overwrite everything like keybindings and macros you can avoid this by only copying the necessary things that you want.
Note: you will need to manually adjust your chat settings as Elvui Chat is broken and the bags don't work either (at least for me) so just use bagnon and Prat.
Here's my settings for Nvidia Inspector (be sure to play the game in full screen mode for it to take effect - usually get better frames for smoother gameplay and better graphics).
Addon tweaks and a few new addons included such as the Light Head quest addon that generates WoWHead comments for questing as you can see in the imgur.
Enjoy, might update again at some other point.
Note: The vehicle UI isn't working (kinda annoying and until I can figure it out you have to disable Elvui in order to get that interface.
I am having issues with stances not changing for druid and warrior as well as my keybind for my bags not working when I use the all bag bind versus and individual bag.
As for stances not changing I'm a shaman so I'm not really able to help you out.
Note: I'm not the creator of the Elvui backport to TBC so if something is broken I recommended disabling that setting in Elvui for that specific element and use Moveanything addon to relocate to where you want.
if you are having any problems with ElvUI, (i had the druid stance bar issue as mentioned above)
i suggest you download the newest release at: https://github.com/ElvUI-TBC