Independent Project Management Consulting?

I am an IT Project Manager with over 19yrs experience in IT. I have an undergrad in CS, an MBA, an MCDBA, a CEC, and a Comptia IT Project+ cert. I just completed a PMP course, and I plan to pass the exam next month. I am interested in becoming an independent IT project manager or management consultant, and I would like to get some advice from someone who is already working successfully as an independent in this field, preferably someone who works in the DC-Baltimore area. I need to know if there is enough work out there for independent PM?s so that I would be steadily employed, and if PM is enough ? do I need to look for work in my technical specialty as well.