I'm going for a very similar process (main difference being that the triangular pieces that are removed in the gif towards the end get added to the vaginal walls for more depth, and that the procedure involves removing all scrotal follicles from the inside so i don't have to get that done through electrolysis in advance) and from what several of my friends told me, the pain is manageable. Really strong painkillers are normally only needed in the first few days.