Ha, I remember my first hexacopter flight, a very long time ago now but the nervouseness getting it in the air was the same. You can take out some of the twitchiness in your controller by adding expo to the aileron and elevator channels, if your controller is programable?
I have a Futaba JH 10 so I will be messing with it today. I do not want to make it sluggish in GPS mode but less twitchy in manual. I think the adjustment can be done through the flight controller as well. Google should help me.