Plus, you have Story Points on your side, and I'm allowing you to try to augment up if you'd like. I'd be surprised if you didn't hit 20 successes. Finally, if things seem too skewed against you (you all roll terribly, say), we can bring Nera in as a pinch hitter.
So, yeah -- let's see what happens! It's not my intention to punish you, but I also don't want to play through the evacuation blow-by-blow, as that will take us another two or three months of play time. Go for it!