While your listing agent is licensed for the entire state of Virginia, s/he won't know the local market. For example, what is not yet in the MLS but coming soon. For example, I am working with a local buyer on a house that is a short sale that won't hit the MLS.
Also, an agent 45 minutes away won't know the local amenities like a resident agent. There is a lot you can get online, but even more from someone who has lived here for 16 years like me.
You will get better quality service by having each agent work in their local area.