Keep the dreads! You rock them! You are beautiful.
U should not keep them,get the extensions you look awesome with them!
Yeeeps I'm jealous of the length of your hair.
I personally like both myself, and think either of them suit you.
For me, it really depends on the person. I feel like some people just shouldn't have dreads and can't pull them off, but you look good with them. I always do love long, natural looking hair though as well.
I suggest you make a list of pros and cons to help make your decision.
A lot of people think dreads are gross or don't look very 'put together' or professional. Some think they are sweet. Some people don't like black hair and think it looks goth or punk, others do. It's all up to you and what makes YOU feel like you look good.