You don't necessarily need to biopsy a mole before removing it. When you take the whole thing off, the pathologist gets to see the whole specimen. You don't need to worry that the other 4 moles were melanomas. As to whether they were suspicious enough to take off, i couldn't of course comment without having seen them. In general, though, I would rely on a dermatologist to make that judgment and reserve the removal for the surgeon, if necessary.
When the biopsy reports come back, I would likewise ask the dermatologist to help interpret them and decide what if anything else needs to be done.
Best.
Dr. Rockoff