Hi Sabrina, it is good for you to read your name in Chinese. It will be alright to use your original name in many big cities such as Beijing, Shanghai, Guangzhou, because most of people in these cities are speaking English or visited many other countries. But when you travel, work or meet other people from other places, a proper Chinese name will be easier to make friends there. A four letters name is not usually in China, so I may suggest you to make last 4 letter of your original name "rina" to 丽娜 will be better. And 丽娜 has the meaning of beauty, it is a wonderful name for a girl like you.