I've been a regular commuter for over five years now - about 7 miles round trip. We recently had our first child and I'm starting to think about how I'm going to include a child care run two times a week. Our preferred location is about six miles out of my way which isn't the concern - I am struggling to find a clear winner in how to combine the two though - any one have any advice on how to handle a joint child care and work commute? I'm thinking either:

• A trailer w/ my existing rack and pannier setup
• A rear child seat with a front rack and bungees for my pannier
• Or an Xtracycle Freerunner/Leap with child seat and my pannier

Or maybe someone has other, better ideas? Child care won't be for another nine months or so so I've got some time to figure it out.