And many have no problem at all with the standard setup. I am 180cm and have never felt the need to have the seat further back or further away from the door or the handbrake.
Don't assume that the seating position will be a problem for you even though it is for some others. Try it yourself before you decide.
There is a problem with trying it to see if you fit. It isn't what it feels like at the start of the day that matters. It is what it feels like at the end of the day. I have spoken to people who drive a range of 4WD work vehicles who have all told me the same thing; that at the end of a long day, especially offroad, they much prefer the Defender.

