http://mattamyhomes.com/gta/communities/milton-hawthorne-south-village/plans/windmere.aspxIn case you don't have the floor plan. ^
Now bare with me on this, the first 2 pic's are (in our condo) what the builder offered, no changes other than color. The only fridge that would fit was 30". So the plan was move in then redesign the whole thing.
Pic's 3 & 4 are what we did, cost $25,000, that included the Silstone quarts counter but not the appliances.
Your kitchen is bigger but the placement of appliances and sink are very similar.
You need to stay with the kitchen that has the sink and dishwasher in the island. That means the cooktop will go where the stove is and can vent straight out the wall. Built in oven and microwave go beside the fridge. I know you can't deal with the cabinet suppler until after you close so it will be dicey if they can supply & match a 30" lower cabinet to fill in where the stove was. Also I would ask the builder to delete the door into the dinning so you can add (after) more cabinets and have the counter go from the built in oven all the way around to the cooktop. If you go with this last bit it gives you 4 to 5 ft of counter before it turns the corner (I only have 20")(awesome amount of work space).
Me, to avoid any hassle I would go with the cheapest kitchen and rip it out later, keep in mind the sink in the Island and delete the dinning room door.