What’s the hurry? While the kitchen is being done you only need a calor gas stove, a bucket and tap…
Integrated units look far better than stand alones, washing machine especially, though capacity will probably be compromised. If you have room for a deep worktop you could just have a freestanding behind a door.
If you have a separate utility room, keep the washer and drier freestanding.
Kitchens with washing machine and drier on display do look low rent.