Project #2: Front patio

I started working on the front patio today. We think we want to take up all of the cement stepping stones and replace them with a slate paver. I found one at Home Depot that looked really nice.

Here is what the patio looked like before:




And here are some pictures of the patio after weeding and cleaning it up today:




The current patio doesn't go as far as the grass line, as you can tell in the last photo. We are trying to decide if we should extend the new patio to the grass line, or if we don't what we put in the dirt area. Any suggestions?