400mm sounds good! Did you go for a smaller pendant?

Have you tried a custom lighting specialist?

I love three in ones because if one bulb explodes, you've usually got a fair few backups before you have to completely fix the bulb (but that's just the laziness in me coming out). In my opinion, I don't think you need a demisting mirror because that's what the fan is for in the three in one.

Changing out my pendant lights dramatically changed my kitchen for the better. The slim modern horizontal shapes made the room feel wider and the colour changed the colour of the wood grain finish of the cabinets.