Hi, I have placed our place holder bid and would like to have project requirements in detail to give you a exact quote on cost and duration.
But I am sure that we can deliver a satisfactory solution to you as we have developed websites and webapplications that have similar basic functionality that you have listed out in the project description. We can develop this website using the Open Source CMS systems like Wordpress as well as we can develop a custom CMS system for you in PHP.
Also you can see from our profile here on Freelancer that we are widely experienced coders with over 10 years of experience creating successful web applications and a near perfect project completion ratio. We have created numerous web-applications in PHP, HTML/HTML5, CSS/CSS3, AJAX, JQUERY, MYSQL, Flash Action Script including large robust web-applications like ERP for Construction Companies, Online File Sharing Service, Social Networking Service etc.
We also have a wide experience administering and managing cloud based servers, specially Amazon EC2s, so if you need we can also help you with setting up of scalable elastic hosting servers keeping if you think that this website will have a large user base.
Like to hear from you further regarding the project
Regards
Piyush