Replace the flooring if needed. Remove dated wallpaper, paint or re-wallpaper (love the 2nd bath inspiration pic). Refinish or paint cabinet. Replace counter top, sink, lighting and hard wear. Replace the toilet to a more updated one. Keep walls clear other than mirror and art. I think this is one of the easiest and best updates you can do to your home! Good luck!

The health and energy efficiency of the house sounds great, but this kitchen looks like one from the last 90's

I have a 1956 MCM ranch we renovated to make more useable for us in this century .I am not sure what you want to do. This is how we used the fireplace that was in the space between the kitchne and the LR These pics were in the summer when we have a sofa in front of the fireplace I love moving the pieces we have around in the different seasons

What is your lighting ? IMO before choosing wall color you have to make sure all the lighting is the same in all the spaces I happen to like LED 4000K it keeps colors true at night and mimics bright daylight. As for tha white it has a lot of gray undertone is that going to work with the stuff you have? Post some pics of your space and BTW the cabinets need to be painted with an actul cabinet paint and done professionaly since unless you have painted many cabinets it is not a DIY job. You need a spray space with no air movement and no dust which usually is hard to come by ,so make sure you love the cabinets and the layout of the kitchen before spending $$$$ on painting the cabinets.