Well my dai and bhauju (non-nepali) decided to do the same thing, i.e, they sent their 4 year old kid to Nepal for he hardly spoke any nepali. all of us wanted him to spend the first most important years of his life in Nepal so that he may never forget where he comes from. but it didnt work out since our devil got seriously home-sick and they had to go fetch him in 2 months. so GOODLUCK!