Do you have your bootloader unlocked? If you haven't then you can't install this.
But if you have, then simply wiping data and caches then installing should be fine, but if not make sure you have the boot.img ready in case you need to flash it manually (fastboot.)
Thanks for the quick reply!
Yeah, bootloader is unlocked. I will hopefully be giving this a shot tomorrow! Thanks again - hate feelin' like a noob! haha