Advice for finding a little in a sorority

A

We just got 44 amazing new members and I really want to take a little since I'm a junior. We have dates assigned to us each week but also reach out to girls we're not assigned to but would it be weird for me to invite them to lunch or coffee? Any advice or tips would be super helpful. Also how did you know you're little was the one for you and that she wanted you as her big?