Hi Donna,
For cabinet, sink base, grill base I can only recommend stainless and the best place for that is
Lasertron Direct for standard sizes bases or cabinets, they also do custom and are great people to deal with. Checkout the Link and go to the Outdoor Photo Gallery for some great ideas.
For the grill, DCS (Dynamic Cooking Systems) is probably the finest built in grill, but can also get with a cart if you desire mobility (I got the cart for mine, but the grill unit can be built in later). Lasertron can build a base to accept it in your layout. If your grill/smoke area is under a roof, I would highly recommed a range hood at least 700 CFM or greater, as the smoke will foul any ceiling material quickly (experienced).
ULine, Monogram (GE), Franklin Chef, and others have Outdoor rated refrigerators. I have both the Monogram and the Franklin Chef and they are great. The Monogram is all stainless and the Franklin Chef is stainless with dual thermo glass doors and two individually controled side-by-side lighted compartments (much cheaper than the Monogram too, check them out at CostCo.com).
What's better than granite for the counters, but stainless would work great there too.
Don't forget a point-of-use water heater for hot water in the sink.
Post the pics when you get it done, would love to see it.
Rob