If the EN10 options are placed at 25c exp Dec 2020 then I would expect that a re-rate of 7-12c would be on announcement of profits would not be unreasonable. So yes post Q4 at 15-16c sounds plausible.
That's an incredibly ambitious goal to reach 25c but digital based products work on an exponential volume scale. Ad space is everywhere from FB, YouTube, Google, HotCopper, Craigslist, down to basic mobile App like Weather, Words with Friends, watch face app,
I know it's huge! My brain just can't deal with numbers like but it is how Google, Twitter, and other digital/cloud businesses work - economy of scale
