I've done 3 timber sales, most recently last winter. Took out 60,000 BF of mostly junk (pallet sale), but there were some maples and walnuts I elected to take as well.
100% without question use a forester. You will get screwed if you don't if you are not around. You can start with your local district forester (Free) for thoughts, opinions, etc. (They will not manage the sale process)
http://www.iowadnr.gov/Conservation...ndowner-Assistance/District-Forester-Contacts
I would not, under any circumstance, deal with a specific logger. BID it out.