I know it's the fashion but to me those plain panel doors (I won't call them shaker style ) are screaming out for some kind of Ogee mould or a scotia around the edge of the panels to go full on traditional because of the cockbead and cornice but that's just me, I like the traditional/Victorian look.I like it! I think the traditional look of the units themselves complements the traditional-esque colour massively which makes it work despite being a very brash choice. I don't reckon it would look right without the inset panel doors, bead mouldings, and proper cornices which most people don't bother doing anymore.
I'm not a fan of boxing in, can look very odd especially with lighting up there. This project is 50mm of the ceiling as it was only a 2300mm ceiling. Enough to get a feather duster in if required.I'm curious about the narrow gap above the upper units and the cornice. Is this just as it appears to be......open to the back of the cupboard........or is there a blanking-off piece in there, joining the top of the unit to the ceiling? If there isn't, that's spider paradise!