DO NOT go to Pok Fu lam...this is a nut commute and an expensive one
Stick to GoldCoast area. that is the most expat friendly area of that part of the New Territories. It's less expaty than the most expaty area of HK but this is by for the most expat friendly area of this part of HK.
And your money will go a lot longer in GoldCoast than in Pokfulam.
But if you go for GoldCoast AVOID the GoldCoast residence (Oldish and averagely maintained). Aegan Coast just across is a lot better for example.