[Q] Still on stock rooted 4.1.2, best procedure to upgrade to stock rooted 4.4.2? topic

Sorry that I haven't been keeping up with the latest developments in bootloader unlocks, roots, recoveries, etc.

I'm on stock rooted deodexed 4.1.2 with unlocked bootloader and a probably now ancient TWRP. What is the best way for me to get to stock rooted deodexed 4.4.2? I don't see any guides for this sort of thing here. Thanks in advance.