I said what I said because even though you have a concern, it shouldn't be a problem. There has been quite alot of publicity about kids like your Grandson lately on the news including a woman who wrote a book about her son. I believe it's called "My son wears a dress".
Most of us here started the same way at the same age. It took me ages to come to terms with who I am because when I was younger we didn't have the resources that we have today.