I tend to stay away from Lakers' totals, especially when in LA, too much shit seems to go down and it never seems right, fouls, TO, etc.
As far as the Lakers' bench outscoring the starters of Memphis and Memphis not having the horses, this is one of they youngest, most athletic clubs in the NBA, I don't think they will have any trouble keeping up; I expect them to set the tempo, and force the Lakers to try and keep up.