Wanting to unlock and root but also want Marshmallow asap

Should I wait to unlock and root if I want to get Marshmallow or is there a way to get it unlocked and rooted?

Need Help ASAP

I tried to root my LG G4 Verizon variant. The root went smoothly but once checked with root checker it was rooted incorrectly. I am now trying to flash the stock kdz but isn't working. Gets stuck at 15% or 60%. Also a message keeps popping up to reconnect device with usb when its already connected and cable is working fine. Need help ASAP!!!!!

Nexus 5 just broke - need stable Nexus 4 ROM asap, suggestions?

I dropped my N5 a bit too many times, and the last drop this morning was the last straw I guess. The screen no longer works. I need to revert back to my N4.

I'm going on a 3 week trip in a few days, and need a responsive, stable ROM with a long battery life. Tweaks and features are not important to me. Anyone have any suggestions? Should I go M or stick to L, or even K?