No pro but I would go with gray on the cabinets. Maybe in a mid-tone. I wouldn't want another color to fight with what's here.

white grout

I love what you have going so far and I'm excited for you! I, too, think gray cabinets would be nice. White could also be nice but not a stark white. If you're adventurous, you could do white uppers and gray lower cabinets. Please update as you make progress 🙂

Can’t tell how many walls and / how much cabinetry ? Makes a difference w busy floor whether / or if you could insert some color which I’d want to do but if its small that gets tricky. No gray cabinets . Black or near black base cabs and pale blue or white on walls is better than all gray. Do you like any of these: blue / yellow /or greens? Default option maybe white but then all the grays will rule . I’d seek a color and it becomes counterpoint to the gray tones ..... then beautiful hardware!!!! Just pale grout ... one shade up from white It still looks white but not stark.