To get your wingray big parted (should work on stingray and everest):
I had to download a BigParted TWRP (the top post's TWRP would not work). I was called "TWRP-2.7.1.0-Wingray-BigPart.img" and I got it here: https://androidfilehost.com/?w=files&flid=15172 (XDA won't let me post a link =( please someone fix this!)
Once the recovery was flashed, I *believe* all I had to do:
1) Do a factory reset/wipe.
2) RESET (very important)
3) Advance wipe on all the partitions except sdcard.
4) RESET (very important)
Then I could flash cm11 and gapps.
If you run into problems, keep wiping/advance wiping/formatting/reseting until the mounting errors go away. I may have missed a step, but I did succeed in going from "normal-part" to big-parted.
Thanks goes out to this post, it was the first CM11 & gapps where I could get BOTH working. Please update top post as I believe multiple people run into this problem.