thinking to go back to Pakistan...

Assalamualaikum
The point has come in our lives where we have an offer to go back to Pakistan n settle in islamabad/ rawalpindi. I came to US 7 years ago after I got married n have spent my life in rawalpindi so not a big move for me but my husband is in US since 15-20 years but has visited pakistan sometimes.
My main concern is education of my 3 daughters, right now eldest is in kindergarten n others are not school going. I would like them to attend some international standard islamic school. I got to know there are many in Twin Cities but need some feedback on them. Why I am considering rawalpindi? Because I have lived there for long and my husband will be joining his family business(industry) n that is near G.T. road so if I am not wrong dha and bahria town will be best places but if good schools r in islamabad then I want to know distance n travelling from there to his job place n etc.
Schools that I got to know about are international islamic grammar school nazim uddin road isamabad, oxbridge school isb, olives school rawalpindi. Also how do schools in pakistan take kids with no urdu background?
Thanks.