Should I or Shouldn't I

I'm just rambling here but tonight at church I was thrilled when one of my former Pioneer girls (now 7th grade) asked me to think about being her small group leader. I love that age group and honestly, have been praying about an opportunity to work with teens again. Part of me says no, I'm already busy enough. But I still manage to fit several hours of TV in each week. Mike has school Thursdays and I'm at church Wednesdays. I don't think it would kill me to get together with these girls once a week for an hour. Would it? It seems like an answer to one of those unspoken prayers so why do I think I need to pray about it some more?