Bespoke website needed

I need a bespoke website built. Its basically a website for a certain particular sport and its a way to innovate the way in which people within the sport communicate. The website will basically consist of people been able to register for membership to the website. upon gaining membership, they get the access to communicate with fellow peers on the message boards. There will be three message boards that will be accessed by the two different kinds of jobs within the sport. One type will be able to post what they are looking for on one main board and the other are able to bid and provide their opinion of who to put forward to the actual posting. The other boards will basically consist of the same kind of thing. The website will need to be easy and straight forward to use and its not a complicated website but it will need to be built to the specks I need it to be. Milestones will be set and full payment incorporated within the milestones. Its not about the website been finished quickly but done properly. I will also need eventual full access of website including database and banner control.