Based on your pictures, I am more of the opinion that the cheek scars should be the main priority. The un-even appearance is due to the rolling scars and I would recommend that the first line treatment is to do Subcision of the underlying scars with some filler instillation to reduce risk of scar reattachment.
My personal practice is that if there are rolling scars, to solve that first and that usually improves the patients' appearance significantly.
Other treatments for the superficial scars be it TCA Cross or lasers as what Dr Wu has mentioned can be done concurrently OR at a separate sitting.
Winston