I'm just a little older than you (like twice your age????), but I feel if your really considering this learn as much as you can about it. Primarily for your own peace of mind.
I'm only a month and a half into this journey and the changes in my life have gone beyond just the weight loss. In my opinion it truly gives you a second chance of getting this health thing right. Mind body and soul.
This site is really a great resource. The topics, the people, and the support you get here will help you immensely.
If you're looking for a doctor check with some of the people here that stay in your neck of the woods. And once you find one ask as many questions as you need to. This is a big decision but a decision I do not think you'll regret. Good luck and I hope everything goes well no matter what decision you make.