If you are going with white trim and gray walls the cabinets would look good being white. However, the white countertops wouldn't necessarily blend well because that would be too much white for most people's preferences. My advice would be to go with a darker countertop (black quartz, darker granite, stained or natural terrazzo), then use the backsplash to transition color between the rest of room. As another suggestion, since your are opening some wall spaces I would also recommend removing the fur downs above the cabinets to open the ceiling up and make the Kitchen feel bigger. Good Luck to you!

I agree with the previous post. Use your backsplash to marry the two. Bring home tons of samples to look at them in the space. With all the options available, there will be something that will almost make the color oopsy look like an intentional design decision. By the way, I don't think it looks bad in the photo so you're close to making it right. I'm sure you will love it in the end!

You need a kitchen designer before doing anything else. No to espresso it is a dated cabinet colour IMO. A poll has to have some info and it looks like you are just telling us you have a U shaped kitchen, We need actual information like what are the floors like in the area around the kitchen., A floor plan of the kitchen if not yet built and pics if it is. BTW if you have a U shaped kitchen unless it is huge you cannot have an island .

White for sure.espresso was for cheap chinese cabinets where all the wood did not match so they did espresso already a dated look. As for DIYing the cabinet painting IMO it never looks or stands up as well as a pro job and if you have never painted cabinets before you will wish you had hired it out.This is a tedious long job and best for doors and drawer fronts to be done in a dust free area and sprayed . You have a ton of cabinets the stripping and sanding witll take days. Do not believe you can apint over the old finish it will look worse by far than what you have. Staining still regiures the same amount of prep and then the expertise to actually apply stain properly.