Foutouhate
Dear sir/madam, I am part of a little team of young developers, we've created a lot of websites of different complexity, such as ([login to view URL], [login to view URL], [login to view URL], and a lot more, you can take a look if you visit our website, [login to view URL]). I believe we are the right team to work on this project and deliver you the best solution that fits your needs with no issue.
Depending on the complexity of the admin area and the quality of the visual interface I can tell you the exact duration of the project, to be honest I do not expect to last longer than 2 weeks.
We will use PHP 5, OOP of course, MySQL and maybe JS or HTML5 for a good user experience.
I would love to hear from you soon, have a nice day!