Which line is completely correct in punctuation and capitalization?

I am Jim from Tempe, Arizona I was born on Friday, May 21, 1983.
I am Jim from Tempe, Arizona, I was born on Friday, May 21, 1983.
I am Jim from Tempe, Arizona. I was born on Friday, May 21, 1983.
I am Jim from Tempe, Arizona. I was born on Friday, May 21 1983.

Please help!