Gonna finish putting my hexie quilt together this week. My suggestion would be to start the piecing and not worry about getting it all cut out first. I'm the kind that gets bored doing too much of the same thing, so I do some cutting then some piecing...then something else (just be sure to keep the fabric for this quilt together).
I have been working on this quilt for over 5 years and it is EPP, definitely scrappy. It will be larger than full size when done and I am using 1" hexies. Hopefully I will have a picture to show soon.
Good luck with yours and enjoy the process. It can be relaxing.