There a surveys taken each year of buyers and sellers by Associations of Realtors and communication is always a hot topic.
I would ask the Realtor how they plan to communicate with you. If this Realtor is as good as you say then they must have systems in place: A marketing system, a listing system, etc.
Here is an example:
We (client and me) agree on a marketing calendar, which is in writing, noting open houses, brokers open houses, when the photographer is coming, etc.
We also schedule a time to either meet or talk on the phone to go over: Showing feedback from buyers and/or their agents, new competition, market changes, etc. This is usually weekly on Thursdays.
I have the sellers sign off on the MLS data, advertising, on and off line, and any other marketing that I do, including mailers, other Internet postings I do, etc.
I use Top Producer, a contact manager that provides each client with a portal so they can see exactly what I am doing by logging onto the own webpage.
Hopefully this gives you a picture of how it might work. FInd out what your Realtor is doing and how they communicate.