Have you put the worktops in yet? How much space have you in the kitchen?
I use 700mm or wider over washing machines etc. OK, it's more expensive, but it makes life a lot easier.
If that is too expensive, space the units and worktops out by 100mm or more and construct an upstand with facing to match the worktop, leaving tons of space for cabling etc.
The kitchen is narrow but long - galley kitchen. At the design stage, have the plans drawn and now looking at findins out as many issues before we start the actual work.
Standard worktops so 630mm deep I believe.