Hey there.
Happy to have your attention, if only for a brief second.
I read all your project info and I’m confident I am well qualified to undertake the task at hand and I can provide you with top notch material based on my PHP and Web Development skills and experience that will definitely fit your needs developing a web app probably bettern than you expected.
Rather than bore you half to death with some "tousands kilometers" length proposal I will summarize all and I tell you just some of my skills relevant to this job. Among other skills I am a HTML, CSS, JS, PHP expert, but to sum up I recommend myself as an expert Web Developer and I have made many great websites for other companies, some built from scratch, like yours project and some just edited at the design or functionalities parts. Also you can check some of my projects on my profile.
I can work anytime you need me and I am also a good Graphic designer, I am an Adobe Photoshop Expert and I think this skill will help me a lot to make an awesome website for you.
I think I can finish this project in maximum 14 days by the information presented in description, but I would like to discuss further details if you decide to work with me for this project.
If you also want to have an idea of my sense of design you can take a look through my profile and tell me what you think.
Good or bad, I'd love to hear from you ;)
Hope we talk soon,
Erik.