Change Big commerce ecommerce store to a recruitment site - or design something similair from scratch

We are trying to turn the big commerce ecommerce template into a site for recruitment. Instead of products we are displaying our candidates (in this case supply/substitute teachers). We want our customers (schools) to be able to log in to their account and browse through our teacher database for their area/type of school, reading profiles and being able to choose by subject, price etc etc just as they would if they were shopping online. The more complicated part is we also want our schools to be able to book (purchase) teacher days from a booking calendar. Sometimes a school wants a teacher for one day, sometimes several days, sometimes several teachers on various days etc. We would like the schools to be able to search by teacher availability on the dates they require, subjects etc. Ideally we would like a separate login for teachers to be able to update their booking calendar to show when they are available to work and to inform us when they update their availability etc so we know it is current. As well as the functionality we also need various settings and words changing in the software to reflect that we are selling teachers and not products so that it looks like a purpose made site and is relevant to whoever logs in. We don't want the site content (teachers) to be visible to the general public if they are not logged in as a school. Hope that all makes sense. We'd like to start asap. Thanks