Accutane is a powerful medication with strong side effects related to skin regeneration. Liposuction should be safe from that stand point but I would be worried about general anesthesia. In my practice, I would rather wait but I would also involve my anesthesiologist and the patient's internist in this decision. The liver function tests will come back in general higher which will create some controversy.

If I learned one thing from my training and practice: if does not feel totally right, wait do it later!

Good luck!