scarily as it is, in real life myself an kira have the same frame of mind.
so to be honest i`d wipe out all the criminals. then once they`re gone, i guess yeah i`d go undercover, cause i dun wanna rule the world cause once u make urself known to the world, its gunna be easier for ppl to kill you, so i`d be ssmart, and lie you did, hang onto the death note for the future.
and just fro teh record i have had a bout 5 dreams where i`ve shot someone or killed stood over thier body looked down on them and waled away, i felt no remorse or anything sympathetic, so i guess if i had the note i would be very dangerous. beacsue as they say, you kill once and youll kill again, and agin, it just gets eaisier every tiem.