Develop replica of an existing website -

I need someone able to develop a replica of [login to view URL] with almost the same features and emphasis on the forum as well as calendar. The calendar should allow someone to click on the date, enter a reminder, appointment, etc then submit and post to the calendar. The ability to have an admin area to add to the different categories as in the [login to view URL] with the left area under navigational links and right area available to add advertising banners. It should be at a point to where I can maintain it by adding content after completion.