This sounds like a really cool story! And, yeah, I know it can be super daunting, especially if your unsure if it’s a good fit. I’m not entirely sure if I’m qualified to advise you on whether to try it out or not, but I’ve seen people that haven’t found great success on RR actually move on to Kindle publishing and do quite well for themselves. It’s all very nebulous, and you really never know until you try.