Which of these two girls should i pursue?

My personal opinion is to try them both out. In your early 20's you should be out having fun and as my grandparents said "sowing your wild oats." I think people should wait til they hit at LEAST 25 to get into a relationship. That way they can learn about themselves, and what they like/want in a partner, and have stabalized a bit in their lifes but yet can still go out clubbin' and have a great time. So BOTH!!! :) Good luck!