Salam Alaikom sister to be inshallah
I feel your pain!! Were to begin?
I am a revert to islam, i reverted in Feb this yr Alhamadulilah, and trust me even tho it seems scary now the more into islam u get, the less scarier it becomes. So just keep on reading and doing everything you can to expand your knowledge with islam and u will find inner peace inshallah.
If your friend is going to disown u if u become a muslim than that just shows what sort of friend she is and that maybe u will be better off without her anyway. I have losts alot of friends i thought were true, but its not the end of the world and it will just make you stronger and give u a chance to find new ones, muslim ones, Inshallah. I only have one muslim friend and your right it does feel like you have no support, but just ask Allah (swt) to help and guide you. Allah will give u the support u need.
With your parents..... that is always the hardest part, there is always that fear that they will disown u but at the end of the day they have to realise that you are their daughter and that you aren't doing anything wrong. Your not hurting anyone and no one is hurting you. So i don't see what the big deal is. that is what i say to my mum anyway. I say to her if i had cancer that would be a big deal but i dont, i am just choosing to follow a religion that is so beautiful and peaceful. If anything they should see that islam is going to make u better person - no drugs or any of that bad stuff is aloud.
It is sort of like food... they say they don't like something, but they have never tried it so they can't say they don't like it if they haven't tried it. They actually have to try it before they can judge it. Its like saying "here try this chocolate cake" once they have tried it and get use to it they will see that it is actually really nice and sweet. lol thats really random but u get the picture.
I have told my mother that i am muslim because she is very understanding, she doesn't really like it but she just needs time to accept it. My dad doesn't no because I am too scared to tell him, i have to learn that I should only fear Allah and then that would give me the courage to tell my dad. So once u learn that u should fear Allah the most then u wil be able to tell ur parents.
I do not think u have to change any of your names. It would probably be nice to have an arabic name but i don't think its a must! Not sure about that. I still have my name but i am thinking about changing it. Keep ur last name and one day when u get married Inshallah have his last name as yours.
As for the kicking out part.. I dnt no. Try and get to know some muslims and ask them for help, maybe go to a mosque and talk to the Imam. Inshallah they will help u.
Well i will leave it at that, now that i have probably bored u lol. But i hope inshallah tht everything works out for you and that Allah leads you down the right path to the truth and hapiness. Salam Alaikom.
Alhamdulillah Allah has guided you to the right path, May He stregthen your faith and make it easy for you and your family Inshallah. Ameen:tti_sister: 
to guide you to the straight path and to be a good Muslim for the sake of Him…
if u had not any reply, let me know.