Should i use a chemical peel?

Hey, i used to have bad acne, but now its under control. The problem is that i have dark spots from the acne, and mild scarring. Do you think i should use a chemical peel? My regimen is using differin, and a cetaphil moisturizer, and cetaphil cleanser. I also go to the dermatologist for microdermabrasion every 2-3 weeks. Thanks for your help! I have been battling acne for around 2 years now. I am going off to college next year, and I want to look my best before meeting new people.