I am happy to hear that your acne has come under control with doxycycline. Pertaining to your hyperpigmentation, you can utilise either Q switch laser/Picolaser or for some lesions, consider IPL/yellow laser to reduce the severity of the condition.
Q switch does nothing really for scars. It helps the hyper pigmentation primarily.
I like subcision with the use of Radiesse and have performed many of the procedures and patients (if well selected) like the results. Fractional Laser would be the next step once the deep scars are dealt with, and the downtime is about 4-5 days (reasonable).
TCA cross is best for icepick scars and the downtime is like 7-14 days (social downtime) as you may look dotty for the period. Discuss with your doctor clearly on your scars and treat accordingly
Winston