TexMod GUI

Have you tried getting into contact with the person running it? I suspect you'd have more luck with that than someone putting in who knows how many hours constructing a full GUI overhaul just for you. This seems to be the relevant thread, if that helps. Given he's changed the bag images to his name I doubt he would have made such a thing public, but if you can contact him he may share it.

Alternatively, perhaps what you could do is find the closest GUI mod to what you want and then tweak it as needed. Depends on which elements you actually want.