Build me a website and plugin

Project: Develop a WordPress site that includes all the functionality of the now dead GeoCore Max system that can be reviewed at [login to view URL], under the Features menu and the Add-ons menu. That system is a combined classifieds and auction system. My objective is to be able to use it as a local news and social networking site. I want to be able to use Elementor Pro to edit all elements of the site. I know there will be a temptation to substitute WooCommerce for some of the functionality of GeoCore Max. I do not object to the use of WooCommerce, but this project must include all the functionality of GeoCore Max. Please do not bid on this project until you have reviewed all of the features and all of the add-ons at the address linked to above. I have the original code but much of it is deprecated and buggy. I will make that code available to facilitate development of this project. That code is in PHP/MySQL. The project must be provided to me as a plugin or set of plugins that is 100% compatible with Elementor Pro. The project requires one installation of the completed system on a server of my designation, along with clear and simple installation instructions of the final plugin/system. In addition to the installation, the final code set will be delivered to me at the completion of the project. This will be a work for hire. The coder(s) will have no intellectual or other property interest in the final code set. All coders/developers who work on the project must execute a non-disclosure agreement with respect to the project. One thing I want to stress is that I want the user/admin interaction with the system to be as simple as possible. Assume that the user and admin are not IT literate, because they are not. I need to have this job completed soon. I will pay for the job upon satisfactory completion and delivery of the project. I will not do interim payments. I will be happy to address any questions you may have prior to bidding on this project. I am in the USA, Central Daylight Time (GMT -5).