My son left LH to MSC after he finished his PN, as we targeted MSP (which is different from your case). LH is a very good kg but it cannot compare with MS's campus and its all round activities.
My son is now in MSP. The school is very traditional but which gives a very good learning foundation. It is true most of MP students are quite well discipline.
**BTW, I also want to tell you that it may true that LH will not accept your second kid if the first one left. We applied LH for my second son in case MS did not accept him. However, LH did not accept my second son even he performed good in the interview. (He was praised by the interviewer)