% removing the Clutch master cylinder . . . Under the Dash . . . seems like a pain to get to. Should I remove the driver seat ?

 

I didn't when I changed mine out. Removing the seat might make it easier if you can't lie on your back in an inverted yoga position.

 

I didn't remove the seat either. What worked for me was moving the seat as far back as possible, jacking the car up a bit, putting a towel or something padded on the rocker and working from a bent/kneeling position under the dash. The CMC nuts shouldn't be very tight, a wobble socket with an extension might make this easier. I did this last year and I can't remember what tool setup I used, I just remember it being pretty easy (unremarkable) to tackle. Having some kind of a headlamp really helps and if you need more elbow room, you can remove the corner dead pedal and kick panel.
Cheers!
-Icer