3D development

i need a site similar to this [login to view URL] [login to view URL] I will have a section "be the designer" and "create a new trend". I will show them some sketches in 2D/3D with also some fabrics options and they have to be able to say 1) like the design and i will reserve/buy, i like, but i won't reserve/buy 2) don't like 3) like a fabric (there will be fabrics options) 4) live a message/ give an opinion/ meet the team and give a live opinion (only for people in London) 5) send their own design by email 6) only for the people living in London the opportunity to buy the dress/the sketch with one click and have them made tailored When the collection selected by the public will be ready then a will need a section where the customers could buy the dresses. Please let me know the costs involved.