You can change your name as many times as you want!!! As long as you are willing to pay for it, after all, its your money. Don't let others shame you, after all, you are the one that has to sign it on paperwork, see it on your IDs and hear it called when you order coffee. [emoji6]
Don't worry about family and friends, theyll get used to calling you by it.
About the ethnicity of your name, trust me, people from all over have names from all over! My name is Japanese, yet I'm African-American. I've been called Ryu since 2004, and what started out as a nickname from an anime my friends and I loved is now the legal name on my passport. My middle name is just my old middle name's initial, nothing more.
Names are yours to do whatever you want with. If you don't like it for whatever reason, change it.
Good luck Salvador!
Ryuichi
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