The install fails whenever I try to install the rom.
Does the install itself fail or does it fail to boot after flashing?
Check md5 and file sizes. Re-download and try again. You may have gotten a corrupted download.
If you're on hboot 1.15 you need to extract the boot.img and flash via fastboot. Explicit instructions here: S-ON 1.15 HBOOT Dev Unlocked flashing help for kernels, roms and recovery & poll