[Q] easy to install recovery and backup stock rom? topic

hey guys,

I'm looking to pick up this device hopefully tomorrow,
I plan on using it for 4-6 months only

I want to install a clean rom, something along the lines of cyanogenmod but I need to preserve the stock rom as when I return this device to IT they require that it be the same stock rom..

would it be relatively easy to install a recovery on this and backup the stock rom before I wipe it and install an aftermarket rom?

from the limited research I've done, looks like I need to have a specific kernel installed before I can install a root and recovery

I don't mind doing further research but I figured I might as someone that has been through this already...

thanks!