well you are right, with the seat upright and the helmet on it is a problem...
thou all through the years, I have always had my seat tilted back a bit, and drove it that way..
And you are right about the long legs, it has been only recently, I have moved the seat up a bit. My son got on my case and I got tired of trying to re-adjusted when we autocross together...
it will also depend on whether it is autocross or track days, autocross is such a shorter period of time, and to tell the truth, the seat position for me is not the problem...
The problem is my right foot, and going way to fast, been that way for years, and now trying to unlearn its a pain...