Hello,
Although there are a few bugs and minor incidents, CL7 and cPanel work just fine. There are a lot of loops you have to jump through while getting the perfect config for yourself, but it is manageable (meaning you have to keep in mind the differences between EA3 -> EA4, Apache 2.2 -> Apache 2.4, etc., as new servers will install only the newest software).
Also, on their installation page, they show details about CentOS/Cloudlinux 7 recommendations:
https://documentation.cpanel.net/display/ALD/Installation+Guide+-+System+Requirements
On their blog there\'s a post from mid 2015 which shows support for CentOS/Cloudlinux 7.
Regards.