Thanks for the reply and advice @guayom. The site’s for a client who are coming from WordPress so it needs to suit a basic level of confidence and familiarity. And I can say after playing around with Siteleaf that it’s a seriously-impressive option with impressive flexibility, user roles, and all sorts of extra features.
I’ve played around with Prose & Co in the past and unless they’ve improved significantly I didn’t find them corporate-client level solutions. And Siteleaf is that good. Still I don’t won’t to Jekyll! I’m too in love with Hugo. It feels dirty!