Pre-Haas Advice Appreciated

I’m currently a freshman taking 15 units. 2 of those 15 units are from a DeCal (P/NP). Projected grades for first semester: A, A-, A-, and potentially B. I’m heavily considering P/NPing the class that I might get a B in since GPA is so important for Haas. However, doing so would make 6/15 of my units P/NP (4/13 not including the DeCal). Is that too many P/NP units?

I’d really appreciate any advice. Thanks!