I don't think that it really matters what any of us think as you are the one that has to live with whatever name you choose....guess you should be happy with it.
Ok, so when I'm 15 I want to change my name. I have decided between (NN = Nickname).
1. Emily NN: Emi 2. Marceline NN: Marcy 3. Bea No nickname 4. Sabrina NN: Beanie
Which do you like the best?
I personally like Emily, but you should choose whatever makes you happy. Then people could call you both Emi and Em.