Custom Plug-in via Builder

I have an idea for a new plug-in and I want it built end-to-end with Plug-in Builder. The plug-in is for NLE video and audio editing programs. The plug-in will do one simple thing: it will block all of the other plug-ins after it, unless a video or audio event appears on the timeline... (Budget: $30 - $250 USD, Jobs: API Integration, Audio Editing, CMS, JavaScript, PHP, Software Development, Software Engineering, Video Editing)