Pretty awesome results for step completion, especially the 77% on step with 12 drop downs. "Payback" is a cool idea, being compared to Clint Eastwood after giving a bunch of mundane fit information is totally a feel good moment. I've definitely seen additional conversion steps perform quite well depending on the product. Sometimes longer funnels act as a filter for cohorts that are harder to monetize/macro-convert, but I would suggest leaving them wide enough so you can work on optimizing for everyone, not just the super-motivated customer.
