Modifications to a Website Builder PHP script

Hello everyone. I need a web developer to modifications to php-based website builder script built on codeigniter framework. Here's the script: [login to view URL] I want you to make the following changes to the script: 1. Integrate billing of the script with Wordpress paid membership pro plugin. So, if the membership of the user is active, he'll be able to access the website builder script otherwise not. 2. Re-design the User interface of the website builder without making any changes to the layout. The layout would be the same, but you should style the builder menus and sidebars with elements available from a free UI set. If that doesn't work, you should simply change colors of the user interface so that it looks different. Current UI is based on flat design pro by design modo. 3. Copy the menus of existing header blocks(pre-defined sections) and reproduce them as seperate sections. For example: you would take this menu: [login to view URL] and make it as a separate block. 4. Remove the existing "older versions" feature. Currently, if any unsaved changes are made to the website project they are automatically stored as revisions. I want you to remove that feature so that there are no revisions, and the user has to save the changes or they are lost. 5. Restrict the number of projects in the builder the user can create to 10. So, if he wants to add additional projects he should delete some projects and then add. The default limit would be 10, but it should be configured easily for each user or plan by the admin under wordpress billing plugin dashboard. My budget for this project is $100. Please give me a relevant project proposal, that suits the project description. Thank you.