Modification to a Panorama System -- 2

I have a 3D Panorama virtual tour system, and the coder who builds it is too busy to continue this project, so am looking for someone to do some functions left： Add floor plan function to current panorama constructor system, and user may upload one or three floor maps and then add hotspots on each map and link them to scenes. So visitors of panorama would be browse around a property easily. Floor plan may be added after all scene panoramas have been created, or at beginning before any panorama scene is added. If a user adds floor plan first, it would be a panorama planner, and user will add all scene hotspots on floor plan and then start to shoot scenes. You must show previous experience in panorama programming, and understand of tasks well.