Emulsion is a water based paint that you use on your walls but you can use it on furniture if you sand and prep properly. I use it on pieces that need a reasonably tough finish but you need to sand it to get an interesting finish.

I so agree with Alphen Construction - on first glance, it is definitely the handles that are drawing the eye to changes in height. I would definitely try Alphen Constructions' suggestion re 'blocking out the handles with tape' to see how you like the effect. Take a photo when you do it, you can then compare. I think I would remove the handle from the cupboard over the fridge and the cupboard over the stove. I wonder if a steel extractor fan that would take that cupboard to the same level as the other cupboards might be an effective trick, it would also tie in the steel of the fridge, oven and appliances. Under cabinet lighting is needed in my opinion. I do hope you will be able to enjoy your kitchen because it is lovely. I wish you all the best.

Yes agree the door style is dated but for a cheap and cheerful short term fix a coat of paint and new door handles could work. Try a dark charcoal Grey slightly lighter than your black bench top….or a navy and add brushed gold door handles to lift it all.

You need to decide by taking large swatches to your home. The sunlight into the area will help you decide. Different whites will give different colours in different rooms. Only you can decide which colour is right for your situation.