Created using flashtool and mkbootimg.
Rename odin.img.apk to boot.img and fastboot it to have UB stock kernel with TWRP.
To root, download Chainfires latest flashable zip from Here.
Then reboot and press press volume up when blue LED turns on to enter TWRP recovery, and flash the zip from the stored location.
NOTE: I don't own this device, but based on my work for Yuga, Some ZL users have requested I do the same for Odin.
Please test and report your findings here