The only advice I have is to make sure you research thoroughly all 4 major weight loss surgeries: DS, RNY, VSG and lap band. Know exactly how each surgery is done. Know exactly what the long term success/failure rate is for each. Know the lifetime commitment to supplements and dietary restrictions. Most importantly, decide which one will be the best solution for YOUR overall success. Then pick the best surgeon that does that surgery.
As far as insurance goes, get everything in writing and follow the rules to the letter. Document every conversation and write down the full name of each person you talk to. It feels like it is taking forever, but this is for the rest of your life....be patient...you'll get there!
Kim