Most CMS systems work with Freeway - if you search for WepYep here on the forum, you’ll find there are a lot of users using it, also there is Pulse CMS - have a look at the demo on their site and also posts here on freeway talk. I personally use Perch CMS - not a beginners CMS but very adaptable.
Have a thought to the use of images, if any, as some cms manage the use of images better than others. I was looking at mojomotor recently and it doesn’t allow for inline wrapping of images straight out of the box, some tweaking of the config file was required. Not difficult but something required.
Of course this also means considering to what extent you wish to give control to your client.