With all my experience and knowledge in this field, i offer my services for your project. i will convert your site into WordPress Responsive Theme and will finish theme setup and all content transfer from current site to WordPress Theme within 5 working days.
I have gone through your site and notice links on home page left side i.e. For Shippers and Receivers, For Traders/Buyers etc.. open in popup window. its recommended to use proper pages for them to get benefit of SEO and ranked higher in Search Engines. but if you prefer to stay this like popup, we can make it as it is.
Newsletter signup simply shows thank you message, so i assume we only need to adopt a plugin which will allow our users to subscribe to newsletter managed through our own site (not from mailchimp or other subscribers websites).
Everything on site will be managed through WordPress backend, so you can control on your site content.
please let me know if you want to discuss anything in advance before getting starting work.
waiting for your positive reply.
Thanks & Regards
Bazish