In my opinion, I wouldn't set an order in for .22 before the market opens. Hopefully I'm wrong, but with is downward momentum lately it could very easily slip down to or past .20 - and right there you'd already be down 10+%.
If you happen to share the same outlook and timeline I have with the MJNA, .22 is a great price. Just know things are quite volatile right now. New investors tend to have shaky hands and start dropping shares when things get rough. Tomorrow could be another rough one, but again hopefully I'm wrong.