I am going to be 100% honest with you. The band is simply NOT a good thing to have. It's damaging (beyond what I can fully describe with words. I swear to God in heaven, I never had such pain in my life.)
It's NOT considered a lifetime device. That means that it will almost definitely have to come out in 10 years. Most people don't make it that long and need to have it removed sooner. It causes scar tissue and adhesions to build up.
Please Google, "Referred left shoulder pain and lap band." Also, read the Revisions forum here before making a final decision. You'll see more revision surgeries FROM the lap band than most of the other surgeries combined.
Even people who HAVE the band currently say that they'd choose differently if they could do it over again. And, unfortunately, with insurance companies implementing a "One WLS per lifetime" clause, you might only get one chance to do it right. This decision will affect you, your family and the rest of your life.
I have diaphragmatic damage, hiatal hernia (caused by the band,) ulcers, and plenty of other resultant health issues from the band. These things affect my quality of life daily. If I could go back in time, I'd certainly choose something other than the lap band. I regret ever having had it done.
Good luck. Research a LOT. Read EVERYTHING. Don't disregard the "negative" aspects.... those are the things that no one ever thinks will happen, but they do with alarming frequency with the band.