Hi, my name is Vítor, i'm a professional web developer with more than 2 years of experience. If you already have the design it make everything easier, i don't know yet the size of the site you need and it's functions, so i can't give you a estimation of how long it will take, but i can work 6 hours a day on it, going up to 40, this on week days, if needed i cant even work on weekends for fast delivery, with the same hours.
I have all the skills that's needed for the full stack development of a modern website and i can guarantee the final product quality.
Just get in contact so we can start working, waiting for your response, thanks in advance for your time and the oportunity.