Greetings sir,
I have read your project description and we'll need more information here.
Mainly regarding database, as well as the complexity of the .psd files.
Do bare in mind final time frame or possibly the bid could variate in terms of time frame as well as fee if project's complexity is exceeding the initial bid.
Free demos are our good practice, so we could offer a one. It would help you, in your review to help reassure you in quality of the product we offer.
As for our expertise, we are team of 17 European PHP experts /Web / iOS / Android developers, all experienced in their field of work. Quality is our main goal, for the purpose of being team of choice for our employers should they need any IT work done again.
If you have any questions please do not hesitate to contact us.