I have the 14 ways as well. One of the problems with so much adjustability is too many variables. Took me a little while to get everything together... especially as I hadn't realized initially there was a set to key function and things kept reseting each time I got in the car. I guess, I'd ask whats actually bothering you that you feel the need to keep twiddling?
Typically I start with setting with leg position. I make sure I'm comfortable with the arc for pressing the pedals. Slight knee bend with the clutch fully depressed. I normally concur with first dropping the seat to the rails, but I have found that the arc of the clutch pedal in my CS has me with the seat slightly elevated. Once happy with how the lower half of the body aligns to the pedals, I try to find the optimal seat back angle both for comfort and vision. From there, I stop mucking with the seat and adjust the steering wheel, by a general rule of thumb, which is to be able to stretch your arms over the wheel and have your wrist fall on the top of the wheel. That typical gets one a little closer to the wheel than some might prefer, particularly in the air bag era, but its what I prefer. Key point is that the relationship between the upper body and steering wheel isn't fixed on either end. Perhaps its obvious, but often its easy to forget that adjusting one's driving position isn't limited to shunting the seat around. After all that I'll do the lumbar.
Despite having only had the car for a bit over a week, I've done several 3 hour+ stints in it. No back pain or discomfort, at all. The only accommodation I make on a long drive is that given the ultra firm seating, I move my wallet from back to front pocket. Otherwise it tends to make my butt sore and slight torque my driving position to the left.