The November presentation (see slide 33) suggested ASX300 entry would need a sustained market cap of around $180m, or a share price of 69c. In a couple of years the market cap threshhold may be higher, of course, but it won't be as much as $700m.
A realistic goal, and another 100% from here in the next few years would still be a pretty nice result (especially for those of us who bought at 6c).