Want to install CM12 on ZV6 Rooted do i have to do anything extra?

Wanting CM12 on my LGG3, i accidently upgraded to 4.4.2 when it came out and was just today got back to wanting a custom rom, i rooted with the LG Root Script V2.4 and have checked Superuser is on, i go to clockwork mod to look at my recovery and i guess i have TWRP and ClockworkMod Recovery but its a custom one, dont know if its 2.x or 3.x. I also remember when i was first looking at custom roms or maybe flashing back to ZV4 you had to back something up to be working on sprint.

So my question to you is,

1. Do i need to do something with the recovery.
2. Do i need to back up the MIN/ESN/MEID/IMEI or anything like that or can i just straight up install CM12?

Thanks for the help