Surge tokens do not allow you to crit or dodge, they allow you to hit or block a hit. Only rolling 1 surge on a target in light cover won't result in needing to roll a defense die for the opponent. And it allows you on the defensive side to spend a surge token if you roll a surge on the defense die. Only pointing out the distinction for new players who may see your video.
For the Double Bounty CIS list Grievous needs Underworld Connections which allows you to take two mercenaries. Without that command card upgrade, you can only take one mercenary unit
Oh God I want to get into legion for christmas and for the love of me I can't decide with which one of these two factions to start. I prefer CIS overall but the only drawback is that I don't think I'll enjoy painting 30 B1 droids...