You're not going to have a "bad haircut." They will buzz your hair all over before the procedure and it will grow back evenly. I had a 1500 FUE done by SMG (Dr. Ron) 5 months ago. I was able to go out in public, without a hat, about 2 weeks after the procedure. It just looked like I buzzed my head.
By the way, I am very happy with my result so far and I'm sure you'll have a great result as well. Everybody at SMG is awesome.