Waitlisting is commercially confidential to BA, you may find the occasional agent who will indicate if there is a long waitlist or so, but it's not public knowledge, as is anything else in this general area.

Gold definitely helps, as well as any clout your company would have if you are booking via corporate channels.

Personally with such a long lead time I would expect you to clear, I normally clear if I'm down to the final week, and November is quite some time off, accepting you're just off a holiday period straddling India and the USA. I'd give you a 90% plus chance unless there are other factors involved. Obviously you need your TA to come up with a Plan B involving another gateway or airline, just in case.