GDX - Looking for a short term bearish opportunity.

While I really missed it at 21, there is a long legged doji on Friday, I am looking for a confirmation for a short term bearish play. GDX has been incredibly strong the last month and it is very overbought and the MACD is way high too. Watching for confirmation for a short term bounce down. Maybe get in around 19.50 and out at 17ish. There are a few small levels of support between those points. Thoughts?