When I had the surgery, I was 41, 6'1", HW of 505, CW 490, surgery day weight of 460. I had sleep apnea, prehypertension and a BMI of ~60. I also had to take blood thinning injections post-surgery. I also had bypass surgery (which has a higher risk of complications). So you and I are/were in roughly the same ballpark.
I came through the surgery fine. Definitely sore. But it drastically improved my life and I would make the same decision in a heartbeat. Heck, I was able to look down today and see my toes, instead of them being covered by stomach. I've gotten to experience stepping on a scale and having the first number be a 2. I am approaching the nine-month mark and I weigh 295 and wear 2xl/3xl shirts (I'm like a 2.5xl at this point, I was a solid 6xl pre-surgery).
Do you have risk factors? Yeah. But here is what I noticed from that list: you don't have a major condition that will obviously cause complications (like some disease that makes it difficult for your blood to clot or something like that). Do you have a higher potential for complications than someone who only weighed 400 pounds? Yeah. But its a generalized risk, not a specific risk.
My recommendation, if you are still interested in the surgery, is to determine right now that you are going to follow your surgeon's post-surgery advice to the letter. If you need 28 days of injections, decide right now that you will do all 28 days. Whatever meds or vitamins he tells you take, take them. Commit right now, "I am not going to disobey my surgeon in a way that increases my risks." You cannot eliminate the risks entirely and if I am being honest, those risks will come to mind when you are being wheeled around on the gurney. You have no guarantees about what the other side of the surgery will look like and feel like. And you will wake up from the surgery in pain. But if you decide that you will do everything you can control to minimize the risks, I think you will be happy with a decision to have the surgery.