How to lose weight with PCOS
An energy restricted, low GI diet (with a 500kcal deficit) with dietitian support was highly effective in reducing total testosterone levels, improving menstrual regularity in 80% of women with PCOS and decreasing the occurrence of acne.
This is a good indicator that it is possible to lose weight with PCOS, without cutting out entire macronutrients or food groups.
Should You Cut or Bulk?
For people who are in a position to gain muscle more easily, I’d consider going as high as 500kcal surplus per day for the short term. I would aim to limit it to ~250kcal max for advanced lifters, which is the equivalent of 1kg per month.
So if you are intentionally gaining at a quicker rate than that, you would also expect to be gaining a lot of body fat.