You know? Rereading this thread brought to mind something that might be worth mentioning.
The first time I climbed in the pilot seat of a plane was in the front seat of a WWII era Aeronca Champ. As I recall, it had no artificial horizon, and just bare minimum steam gauges. It didn't even have a radio. It was about as dirt simple as anything that I know of.
Maybe that's why I didn't relate to the inner feeling that you were telling us about. It might be worth seeing if you can find an instructor with a Champ or a J3 Cub as your trainer for the first few hours. I didn't solo in it, but I did my first six hours. It took much of my concentration to handle the rudder pedals. When I went to the 150, my rudder control was completely automatic, taking one ring away from the multiple ring circus. Another six hours in the 150 and I solo'd. I REALLY think it would have been longer to solo had I started in the 150.
If you COULD find such a plane for instruction it might alleviate alot of what you felt. You sit in front of the instructor with no one rubbing elbows. The controls are so sparse, you might not have the control and indicator overload that crept into your mind.
Just a thought. Stick with it and good luck,
Doc