What would you do?

Ok so here it is. I have everything I need done just need paperwork sent to insurance. I have spoken with them many times. The lady I spoke with yesterday has had lap band as well. She told me “once you do what we require for pre certification we are very quick to approve you for lap band”. So my question is I already have to have my gallbladder taken out and that is set for Aug. 4^th. I have flare ups but I can live with it most days. If I get a call that says you have been approved you surgery is in 3-4 weeks what do I do. I have to have 6 weeks between the surgeries. Would you move your gallbladder surgery and have lap band done sooner or would you wait and have lap band done at the end of Septerber or October?