Hi,
I guess you need 2 people, one Graphic Designer, who is going to build the PSD files (graphic design, color management, image optimization, etc), and a Web Developer who will take that design into real quality software (bootstrap, css, html, jquery, etc).
The process will probably take 5 to 8 business days. Between both of them. Depending on the layout it could take more.
Regards,
mb