you dont have to worry about those free trading shares that become unrestricted. In fact, I'd say most of private placement shares are in hands of those that have plenty of open market shares they can play with at any time.
What you appear to be concerned about is the normal ebb and flow of Mirage, which is not a lot different than many other OTC stocks. If you have have a nice profit, then sell some shares and buy back if they pull back. But keep in mind, when this does blow, whatever "profits" you made doing so will potentially be blown away, and I am preaching to myself as well.