Hi
I am a web developer and I can build your site now!
I have read your description and have questions.
For the new site, which platform would you like to use? Wordpress, any other PHP frameworks such as Laravel, CodeIgniter, Symfony or other ones(Joomla, Drupal, and ...)
As I don't know the details of your site, I am not sure.
But if your site is not large, WP is good but if you want flexible functionalities, then WP is not appropriate.
Please contact me and let me know the details.
Regards