Online Database for Event Planning

I want help creating an event planning project with calendar and templates to use for every new event. we run an event planning business. important components are - place, date, type of event, time of event start and finish, food, decorations, artificial, natural, base, linens, overlays etc... I would like you to help us make an online event management system where we can upload out resources and make sure we do not offer the same linens to different parties in a different location. also, keep track of the dates and foods to be made for the events, and customers can upload pictures to different fills like cake or dress they wish to have. Different project managers and everytime someone makes a change it is recorded to know who made the change. so we need access from administrators, event managers, and clients. with different information access. We should be able to add and delete fields as needed. Ask questions and send us your quotes.