Since you have a kitchen designer (smart move!) you may not need this advice, but it might help anyone lurking.
I read the advice at a kitchen forum from the former GardenWeb (now Houzz): http://ths.gardenweb.com/forums/kitchbath
New to Kitchens? Read Me First!
This is a good place to go for opinions/advice from people who have been there. They call themselves TKO for Totally Kitchen Obsessed.
General advice:
Look at the kitchen as circles of work areas: Prep, cooking, clean-up
Basic kitchen layout should be: Ice --> Water --> Stone ---> Fire
(Fridge, sink, counters, range)
Almost all drawers for lower cabs, full extension, and consider toe kick options
Sink: Single, offset drain for more space underneath
Supersusan rather than Lazy Susan
Double outlets, or undercab plugmold to eliminate holes in the backsplash
Many people save money with Ikea cabs, and order custom doors (from Scherrs', Semi-Homemade, etc.)
Best wishes with your remodel!