Hi! I read your description, and duly mentioning "AWS" in the first line.
I've gone over the attachment - it looks like you have locally developed a node.js application packged in docker, and someone has gone over it with some concerns, but not necessarily the knowledge or ability (or a combination of both) to put together the missing pieces needed to jump the gap between a small project being developed, and a live cloud-hosted service that is robust enough.
My concern is that the document goes over a lot of different points at a very high level, but making the assumption that someone understands what's behind each bullet (for example, "encrypting the backups" implies that there is a backup in place already). As such it's hard for me to place an accurate bid, because the scope is defined only fuzzily.
I'm not an inexpensive consultant, but I do have many years of experience in most, if not all, of the technologies mentioned or implied in that document. Going over each point in the document and doing a polished job on each would cost much more than $750 (just defining it all properly would take presumably hours of knowledge transfer time), but if you're interested in exploring the possibility of starting with a small definable portion of the document (to be mutually agreed on) and proceeding from there, I'd be happy to work with you. I'm also happy to spend a bit of time discussing in more detail to better understand the scope.
Looking forward to hearing back!