Just as an aside, it's a good learning thing to try and do a lot of stuff like this with VA, and your idea of hiding dangerous commands like that within a safe place is a good one. Personally though, some things I just keep manual, even though it means I may have to do it slower or while in the middle of something else.
Boost is a perfect example. I recall seeing early users of VA trying to map everything, including boost, and discovering what a mistaken sound can do to them inside a station. Joystick stuff is another. I played with an auto evade one that would randomly move the ship thrusters around as I was fleeing. It worked...too well. I set it off one day by accident and had to struggle with both turning it off and recovery at the same time.
So my rule is, I fly the ship. She can do other auxiliary things for me that if done wrong I can go fix without any major problems, but I'm the commander of my vessel. The most I'll let her do is thruster up on a takeoff to get it ready to go, but her line to me after that is "Ship is yours, sir."
Not a critique of how you build your profile, we all prefer different things, and you have to fly with what works for you. Just a bit of a warning and personal view from someone who has tried a few things and found them a bit too dangerous to trust to the ship's AI.