Harrow primary or British school of Beijing (SHunyi or sanlintun)

I have two daughter age 5 and 7. we are moving down to beijing sometiem in july.

now i am in dilema which school i should admit them.

my wife gave me 3 criteria.

1. Close to School
2. Close to all amenities - hospital, supermarket
3. security

after i do some research , i came down to 2 school

1. british school of beijing - Sanlintun campus
2. British school of Beijing - Shunyi campus
3. Harrow primary school in Grassetown

i like both school but which is more convenient. if in Sanlintun campus.. the campus is very near my office and we have to sacrifice living in villa but live in service apartment. (however, distance to my office, home, school would be very very condusive.

however, i learnt that harrow primary is opening and is pretty good. But that area is pretty new.

New some desparate advise from all of you ladies/getlement for help before i move my whole family down to beijing.

i do not wish to have a culture shock when i arrived. thanks

understand that all school has limited seat