I had an Ikea Faktum kitchen fitted 2 years ago, we have the dark grey Ringhult teamed with white gloss.
We had no issues fitting a Beko integrated dishwasher into our kitchen. We chose Ikea extractor because it fitted into the cabinet above and our own Whirlpool appliances, American fridge freezer, sort of combi microwave and oven. We just checked the dimensions of the Ikea ones and compared them to the ones we wanted.
Our base cupboards are all pull out larder things, so drawer top, then a cupboard door that is attached at the bottom to a drawer base I think it is the same as this with a hidden drawer inside the cupboard at the top.
I managed to fit in an extra shallow drawer in 2 of them so I have 3 drawers inside behind the door front.
It is fantastic to be able to pull out the drawer and get exactly what you want instead of reaching into the back of a cupboard, or worse, having to remove the items at the front to get to the ones at the back. I love my kitchen.
We have a 40cm deep breakfast bar under some horizontal wall cupboards. We use it every single breakfast time and use the dining room at all other times. It doubles up as extra worktop space should the need arise.