For how long do I have to be off cocaine for a Lipo with fat transfer?

Cocaine can cause heart rhythm abnormalities, making anesthesia more risky. It also tightens blood vessels, which reduces blood flow as your body is healing. This increases the chances of infections, fat reabsorption, and poor scarring. Anesthesiologists are generally concerned if any patient has used cocaine with 72 hours (or 3 days) before surgery. However, as a surgeon, I would want you to avoid use for several weeks before the surgery. For the best result, you will not want to use cocaine during your recovery period (at least 6 weeks after surgery), so I'd want to be sure you could avoid use for that long before operating. 

I suggest at least a few weeks off the drugs before considering a liposuction procedure. Ensure you do not have withdrawal symptoms before proceeding.  Best, Dr. Emer.

Sounds like you are a very HIGH risk surgical patient! Therefore I doubt most boarded PSs would offer to do elective surgery upon you.