system
A chat on subreddit /r/wallstreetbets
human
You want something that won't expire until end of January/start of february. The announcement is simply for January of 2020, there is not a specific date, so this gives you some insurance that the release happens at least at some point in January rather than going all in on Jan 1. You might also want to buy a call that is 'in the money' or close such as a $2 call. For $150 you could probably get a few end of january calls.

gpt
Then, what's the worst case scenario? How much is the most I could lose? 
  
 And, would $140 take care of 1 contract for 100 buys? That would cost $200+, right?