"Is it a good idea to think about a mildly handicapped for a first bunny??"
Personally, I would say no. First of all, because it is your first bunny, you will be learning many things. It's really good to have some experience when dealing with a special needs bunny. Things like proper handling, finding the right vet, right diet, etc. are things which are good to know before you get into such a situation.
Also, sometimes, a mild disability can become much more serious. It can be demanding physically, financially, but more importanly emotionally. I would really like for your first experience to be a good one.
I had a great bunny, she was just like a dog. I had gotten her for my mom and was a great pet. She had malocclusion (misaligned teeth) and though usually quite minor, her case got much more severe and she ended up dying from an abcess. My mother was traumatized and has never wanted another since though she had loved it terribly.
Now, I am not saying that all bunnies with disabilities die. No no. There are many members here who have dealt with special needs and they can tell you how rewarding it is.
But like I said, personally, though I commend your willingness to care for such a bun, I think you should learn with a healthy one first. And then, if you love bunnies as much as you thought and still feel the same about a special needs, it would be great if you adopted one.