HR SAAS Product developed based off existing fully functioning XD prototype -- Python/Django

I am developing an HR SAAS product for interviewing candidates. I have a fully developed prototype done in XD that covers every single thing from the log in page to the back end CRM and everything in between. Nothing has been left undone. I have also written a 100 page, 14000 word, super detailed, page by page, explanation of exactly what every button and interaction should do. The plan is to develop this with Python/Django, depending on what you suggest (I appreciate you're likely to be one or the other rather than both). The first step will be to get the product from XD to a working prototype. There are various elements that may require seperate additional help (like with some of the functionality including AWS trascribe, WebRTC, and Outlook APIs for calendar integration), but that's fine. This is not going to be a one man project. It's a full scale HR SAAS product. This should be a fun project for someone proficient in these technologies as it's really a 'paint by numbers' project - you just have to take the XD prototype and copy it exactly. It will be hosted on AWS S3. I'm attaching a document with a select few screenshots from XD to give you a feel for how this will look. These don't give you any info about how the whole thing works. The people I hire will obviously get access to the whole thing. It will have to look exactly like this; not nearly or similar. If you haven't answered the simple question below I know you won't have read this in detail and so you'll be overlooked. I need people who are as obsessed with detail as I am :). "How do you get the XD prototype into a working model? Do you code HTML into PHP, just start with straight HTML and CSS until it's right and then work on the PHP, or something different?" I will be looking for you to quote for the whole project or part of it as defined by you. Obviously you can't do that without seeing the whole spec, but it would be good to hear some ideas of minimum and maximum project costs for such a project.