Through a roundabout way, I was put in touch with a forester who was a retired federal forester who went into private practice. He knew how to write a contract and run a sealed bid and he required the loggers to be bonded and to put money in in an escrow-like trust for the end of the job when some loggers like to cut and run. My advice is to join forestryforum.com and get advice including forester recommendations from them.