After adding the Gale Wolf's pathways, I did something else entirely. It was nothing much, but I used partial shifts to transform my bones, flesh, muscles, and skin as well.
Having access to several Tier-2 Demons, each of which I could permanently transform into at this point, I made something work. It took yet another week to replace my human bones with those of a Tier-2 demon without changing my structure too much. My shoulder blades were broader and thicker than before, and the hint of wings protruded from them, but I didn't have suitable wings or similar structures to attach to them.
That might change as I progressed further, but it was not yet feasible. My skin was darker than before by several shades, yet it shimmered in a pale light at times, which was odd to everyone staring at me. Then there was a black, curved horn protruding from my forehead. It didn't change my physical strength much, but it looked cool.
