I had lapband surgery & love it. My problem was that I always over ate & the lapband helps me get fuller faster. Thats really all the band will do for you. Along with it you will need to do diet/exercise & that will make it successful. Because it has a slower rate of loosing weight my surgeon actually prefers it for patients under a bmi of 45. Currently your bmi is 64. With that being said I think I would suggest you researching other surgeries available. All the other WLS will help you loose the weight quicker (lapband is 1-2 lbs a week) to get your goal of being healthy & pregnant.
After any WLS it is suggested that you wait 12-18 mons. before getting pregnant.
If you do choose the band, let me know any questions you may have & I will be more than happy to help you out
Best of LUCK!!!