Firstly, congratulations - your site is beautifully designed !!
We are a team of designers and developers with expertise and experience in Photoshop, HTML, CSS, PHP, AJAX, JQuery, Angular JS, XML, Wordpress, Bootstrap, CodeIgniter, Laravel, Google Map API and MySql.
We have designed and coded many custom sites and applications of varied extents and complexity, including many online stores. We have coded and integrated custom CMS in core PHP for many sites enabling easy management of products etc from a password protected admin section and have also integrated Paypal and Authorize.net.
I have studied the attached checkout page. I request you to share the other pages. This will help me to assess scope precisely and will also help me to determine the CMS requirements. I will revise / confirm my bid accordingly. Detailed specifications and inputs will also help me to make an informed commitment and deliver as required.
I ensure a very thorough job and also support if you need changes / enhancements in future. I look forward to hearing from you and working on the project.