This is my final panel layout. I gave this task 12 hours - but honestly - it was much more. I've made revisions to this drawing dozens of times - hopefully each one a little better. My logic was - I'll be flying with my right hand - therefore, most everything else must be performed with the left hand. Throttle, Mixture, Trim, Flaps & Radio. So, I made sure that each of those devices were in easy reach of my left hand. Lastly, the switches on the bottom have a logical order - left to right - as I go through start-up, taxi and take-off.