I just found two other stocks that may fit your criteria: MSON and EVTC. Both recently announced break-through earnings. They have a high growth rate, low P/E and seem overlooked to me. I have the same investment strategy like you and I always try to double per year. This year I already doubled during the last four months. Two other stocks I currently like are: BOST and LARS. I bought them way lower and I am already nicely in the money. EVTC I haven't bought yet, since I just discovered it. The others I am currently holding and they have a big upside potential, at least in my opinion.
Check them out!