good kernel for CM on M7 topic

Hi,
Which is the best rom for battery life? on cm12 it really sucks and it keeps draining even in airplane mode.

which kernell can i install for fast charge and tap to wake on cm 12? i tries elementalx, it didn't work )black screen) and i had to reinstall the rom

what can i do about the data toggle on cm12? i can't turn it on and off in one cllick anymore.