So if you had an extremely vivid dream with someone calling out your name and begging you repeatedly to find "Lois lane" then you wouldn't google who Lois Lane is right after the dream?
I wouldn't be surprised if him looking up Lois Lane is in the Ultimate Cut.
As for your second point, yeah, I believe him not listening to Superman before his last words were a result of him just tuning out Clark and going into full kill-mode. Stabbing someone to death is a very intimate thing, by nature, and when he's finally close enough to finish Superman off he can't help but hear Superman pleading for his mother. Then Lois Lane, who the Flash said was the key to everything, comes running in begging him to stop.