Grandparents often seem more accepting IME.
As for the rest?? Quite some would say: "What took you so long?!" and I go... oh really?
Encouragement - to coming out? If you even speak about "friends" they seldom speak up. Being TS/G is not something they know much about - mostly. IME they think you're a queen in the closet and who wants to drag anyone from any closet?
As for support? Well, here also you'll find out who your friends are. It's my experience lots will fall by the wayside. During transition they find you are not quite anymore who the actually befriended – and for what ever reason, often your interests also will change, including them too.
Good luck honey,
Axelle