Hi WorldWalker, I can't help you much here 'cause I've not had surgery done on my foot. Unlike you, I have high arch(pes cavus) and my doctor also asked me to go for surgery. In the end, I cancelled it but am still under his care as he wants to monitor me. And like you, I have feet problems since a child and my feet hurts everyday. I can't wear a lot of nice shoes, so am stick with sport shoes + orthotics. Orthotics, taping, physio, nothing much helps me... but I'm still not confident to go ahead with the surgery. My surgeon says success rate is 80% for my case and it would be a major surgery. Then you will not know if the pain will be gone after surgery. I ask myself, what if the scar is sensitive and will hurt even long after I have recover. What about the metal implants in my feet, whether they will hurt or effect me after surgery. As bones will be broken, whether it will heal/join back properly... if not, more surgery. Infection is also another worry... I'm still young and don't want my life to be affected by the surgery if the outcome is not as good as I want it to be.
My surgeon also says that my ankle has tilted due to my feet problem.
Have you seek a second opinion? Don't rush into surgery if you are not comfortable and confident enough. And if you do go ahead with the surgery, make sure that your surgeon has a lot of experience with that type of surgery.
All the best to you!