No, you were clear. Maybe I wasn't, though.
Playing Lawrence would most likely bring you an average day: if your hitting rocks, your pitching will suffer, and vice versa. Benching Lawrence raises the stakes: you could do very well, or have a disappointing day. More risk, more fun, as they say.... (does anybody really say that?)
It sounds like you're rooting for your bats - in that case, sit Lawrence, but don't fret about this decision too much, especially if he does well.