Migrate a basic Joomla website to latest wordpress

General information for the website: I need to migrate an existing website on old version of Joomla to latest wordpress
Kind of development: Customization of existing website
Num. of web pages/modules: 8 pages
Description of every page/module: This is the current website: http://www.watfordnotarypublic.co.uk/

We need to create a similar template (happy to get a new theme) and move to latest wordpress.
Description of requirements/features: This is the current website: http://www.watfordnotarypublic.co.uk/

We need to create a similar template (happy to get a new theme) and move to latest wordpress.
Similar urls: http://www.watfordnotarypublic.co.uk/
Extra notes:
I've created a new template @ http://test.watfordnotarypublic.co.uk/ I'd like to use this template or another suitable one you have to migrate to this instance. I'll then redirect the DNS after once we are done.