Silver cloud stone is beautiful! If continuing the same floor is possible, that would be the best in terms of looking cohesive and having seamless flow. Hopefully they still make that color/pattern of LVP. If not, I would go with the stone look. Coretec does make some nice patterns, I can see why you are looking at them.

For countertops, I would go with Viscount, it's such a beautiful stone! For flooring, I would continue with the same option that's in the rest of the house, just make sure to add some details to incorporate the colors well.

I also would look a Mannington Adura for floors and that needs to be chosen before deciding on counters IMO. Ideally the same floor as the rest of the spaces and not a wood look in a different color that won’t work

1) Please, if possible, go with the same LvP

2) I think, after awhile, you will regret the busy granite. I'd go with the simplest movement you can find, Here is River White

3) Add a backsplash that pulls together the flooring and countertop.

I think a vinyl in a stone look would be perfect in that kitchen. Look at Mannington Adura Max plank in Cape May.

https://www.mannington.com/Residential/Adura-Vinyl-Plank/AduraMax/AduraMaxPlank/Cape-May/MAX680

If it was my house, I'd go to great lengths to try to get the same flooring as in the rest of the house. If you really can't match it, then get a stone-look LVT that is warmer in tone, so that it complements your other floors.

I would avoid a cool, all-gray kitchen. In my house, I have wood floors almost everywhere and wanted to do gray LVT in my kitchen. Prior to placing my order, I contacted my color consultant (I live in a small community and she is a VERY trusted resource to me), and she advised strongly against making the kitchen entirely cool and gray within the context of warm tones in the rest of the house. I ended up using Coretec Noce Travertine and am glad I listened to the consultant - the kitchen flows better with the rest of the house instead of standing out as an oddball room.