Take photos of your cabinets and space with you when you shop for granite. Another Idea is to visit Home Depot or Lowes and buy some Single 12x12 granite tiles as samples just to get an idea of what might work. They have lots of choices. Not exactly what you want but close enough to help you zero in. The tiles can then be returned.

Your choices don't flow well to me. The flooring in your photo is pretty (very dark...are you okay with it showing every footprint, smudge, and dust bunny? If so, that's fine). From all of your options there I would do white cabinets with the Himalaya White granite. But you said ignore the granite. :) I would go for the gray cabinets with white quartz everywhere in that case, but personally I'd worry about gray cabinets being very dated in a few years. Is there another quartz option that you could pair with the white cabinets that is light in color and maybe has some movement, like LG Bianco Drift?

Granite is more suitable for Kitchen countertops .

Sheenu, You can get LED Panel lights and get them installed with help from your carpenter and electrician. Carpenter will make holes in the loft panel and electrician can do the wiring accordingly. It looks great in Kitchen and quite functional too. Just ensure that the wires are properly ducted. Thanks, Nitin Cornerstone Designs, Bangalore.