Units stay where the pipes are
The sink, hob and appliance runs hold their positions, so what you are looking at is a finish change rather than a fantasy replan.
Kitchens
Change the doors and the worktop, keep the plumbing.
Kitchens are the most expensive room to get wrong. Try cabinetry, worktops, splashbacks and handles against your real layout before anyone quotes for it.
Doors, worktops, handles
Swap one at a time. Shaker doors against the worktop you already chose, or three worktops against the doors you already chose.
Take it to the quote
Walk into a showroom with an image of your own kitchen rather than a page torn out of a brochure of someone else’s.