Would 3 months be long enough to get a tattoo, after low dose 40mg 2x weekly Accutane?

I'm on a low dose of accutane. 40mg 2X a week. I'd like to get a large tattoo. I understand, and know from experience that the medicine affects how I heal. Skin discoloration being a common factor. With the low dose, how long should I wait to get a tattoo once I stop taking it? I would think 3 months would be long enough to purge the medicine and for my skin to turn over. Thoughts?