LapBand requirements?

Hi, I am just beggining to look into the lapband surgery. Im 18 and have a BMI of 36, Im 5'10 and weigh 251. My mom got the gastric bypass surgery and she is doing great. I have a few questions.. What is the BMI requirement to have the lapband surgery? I read that it can be between 35-40 if you have health problems relating to your obesity, I have had terrible knee problems and am wondering if that will even be considered? Will my families history affect whether or not I can get the surgery? Also, do having the fills hurt at all? And the scar that is the port, does it take longer to heal than the other scars? And can you feel the port under your skin?

Any info helps! Thanks!