I think the point is for it to be radical so that he can't be recognized and can pass off as Maria's sister. I think it was well done and it is not exactly the kind of thing that feels like it should be dragged out. I imagine there will still be opportunities for further changes in his appearance (especially since I doubt he will always remain looking like Maria's sister), and if you compare side-by-side, his facial features do somewhat resemble what he looked like before the procedures.
The one critique I would have, and I think does really change his appearance maybe a little bit too much, is the lips. I know it is Liltkit's style to make him look like a bimbo but I feel like that could have at least been more gradual like the rest of the body transformation. The lips just look weird, and I think if he just ended up looking like the passport picture, he would look significantly better. I also feel like it would have been easier for Maria to bond with him further, because he would look almost exactly like her sister.
All in all, other than the lips, I really liked it. It fits the story extremely well. Nick looks amazing and there is still potential for more to be done down the line. There were some nice touches with the hip shaping part, and even the genitals/tattoos/piercings found the right balance without being too much. I am excited for the next parts!