Kitchen Plan's to be Drawn Up

This all depends on what sort of kitchen you are buying, are we talking a Magnet/Howdens type thing?

If so, those people draw up free plans for you, then you should get a very good installer who will be able to maximise the potential from those plans and liaise with the suppliers about the inevitable missing parts/wrong sized bits.

If it's something a bit poncier then the artichoke might be useful, but only if they are overseeing the job, otherwise when the installer runs into problems with the plan (very probable) he may not get any sense from the artichoke.

TBH, for most standard kitchens you don't need or want an architect.

this is true.