The thing I don't like is that his final plan was not that good. And he had no backup plan.
No need to let Mikami remember the names and write them down later.
Just let him tore a page out of the notebook in the beginning (before Near had the chance to get his hands on the notebook).
And tell Mikami to always keep that page close to his body. That way Light can counter the "switch the notebook" move easily.
Near can't search Mikami because he needs him for his plan, so the torn out page is safe.
That's an easy backup clan that Light easily could've come up with. Espacially if you look at his plan to bring down L (from giving up the notebook till using Rem).
I'm not saying that Light should've survived (Ryuk could've killed him after he defeated Near).
But the way he lost was not good. His plan didn't live up to the rest of the manga (especially the L arc).
"For Feanor was made the mightiest in all parts of body and mind, in valour, in endurance, in beauty, in understanding, in skill, in strength and subtlety alike, of all the Children of Illuvatar, and a bright flame was in him"