Wat!? Mutsu, HQ46!?
Your growth rate is extremely faaaaast!! I attacked 2-4 at HQ30 degree. I held only Kongou, Haruna, Ise, Fusou, Yamashiro, Akagi, Kaga and some CVL. (Most non-remodeling)
EDIT:
I rested for approximately one year. The system of the current anti-air and fire is different from the time when I attacked 2-4. Because I don't have the experience that attacked 2-4 by a current system, please think in reference degree.
EDIT2:
The effect of the radar isn't virtually visible clearly. It's something like lucky charm :P Hit rate and Evasion rate feel like rising definitely when the levels of KanMusu exceed 40. (my subjectivity)