Hey mate, it seems like your acne is pretty under control at the moment so I'm guessing that you would most likely not have an IB. Honestly, there is no way to know until you've taken the drug though. I was in the same boat as you, my acne was a bit worse but I was still very frustrated about how even though I could get it to a manageable level, I could never achieve the level of "clear" that I wanted. Wish you the best of luck dude, 3 weeks in for me at 20 mg/day weighing around 135 lbs. Occasional joint pain maybe once or twice a day for a couple mins, and a bit more hair loss than usual. (I lose a lot of hair normally, so I'm hoping that is just the case). Apart from those effects, pretty smooth sailing so far.
Edit: I had an initial breakout and am still experiencing one partially btw, but I'm hoping it'll be the end of it soon and I'll be on the way to getting rid of this shit condition.