Hi, I have experienced in similar projects. I can help you to convert the hand-made CMS to WordPress without any cause for site SEO.
Can you please give me the existing site URL to have a look?
Also, kindly get back to me with your kind reply, I am ready to start the work immediately. And i assure you to deliver the project within mentioned timeline.
Looking forward for your quick reply :)
To know about my experiences, services, portfolio and client reviews, please check
https://www.freelancer.com/u/psenthilkumar.html
Thanks,
Senthil