Am i underestimating myself?

This happens to be a matter that you will ultimately decide on your own - BUT, I personally would take whatever I could get ESPECIALLY in this job market. Imagine this; you are looking at a few job possibilities and one offers you a job. You hold out for the more attractive job only to eventually be rejected. You are now unemployed and in today's job market, could be for quite some time. Some money is better than none.