Just rambling and only part related:
First, I'm a play racer, I do it for fun, but I like winning when I race.
A successful top fuel drag racer told me this (champion roadracer had told me something similar):
You have 2 parts of your brain, the automatic part, and the decision part.
The decision part must have as little to do as possible if you want it to react quickly and correctly. When it's working right, everything seems to go in slow motion. When it's overloaded, everything seems to happen too fast.
So the goal is to put as much of your seat time into the Automatic part of the brain. If you have to think to deploy your chute, you're not going to drive as well. And this applies to all the driving tasks. If they are not automatic, they are slowing down the critical decision part.
Driver Comfort - When you are uncomfortable it uses your Decision part to send it's input. It's very difficult to keep this part fully automatic, perhaps impossible. You try to keep it down as low as possible. The more comfortable you are, the quicker and better the Decision part does it's job.
Cliff Notes - Put the chute release somewhere where you don't have to think about it, or move very much to do it. You need to get the chute deploy into the automatic part somehow.
I'll admit I don't have it stored there for the "end of run" deploy. I've worked on the "Danger" part instead. When I thought I was on fire, I did 1, 2, 3 and waited to see flames. Never got to 4 or five.
But I'm not that experienced with LSR, especially zero seat time in anything except something the size of the Short Bus that took me to school ...