Definitely get the wallet out of the back pocket. Consider moving the drivers chair to the right to cure some of that lack of alignment you mentioned. Not that big a job. Involves some hole drilling and some plugging of the old holes. That way the seat could be moved back if the need arises.
Give some consideration to one of those beaded seat and back cushions. I have known of people who drive long distances or are behind the wheel for long stretches who give them high marks.
Again though, The wallet has to leave the back pocket first thing.