Booking script modification Codeigniter - Mod #1

We are looking for a professional but low budget CodeIgniter developer to perform the following modification to our existing Airbnb clone script: 1. Split the current user account in two roles: customer & provider 2. Split the inner account page so that the customer role can only make bookings, and the provider role can only create listings and manager their bookings 3. When clicking on the SIGN UP link, the page will create a new user as a customer by default 4. Create a second signup page for providers and add a link to it on the footer "Sell your services", which will take the user to sign up for a provider account. Please also see our other projects, we have several mods for the same script. Payment policy: 1. We will create a full milestone payment upon project award 2. We will release the payment once 100% work was delivered to us 3. If one or more of the described items are not or only partially developed, then you agree to cancel the milestone payment entirely, seeing the project as failed in its' entirety with the reason that we will have to roll back in order to get someone else to redo the work. Please note we are working on a strict timeline, as other projects will be pending on the completion of this project.