Ah, Loon. For my money, the kitchen is the most important room in the house. It needs to be comfortable (try to incorporate somewhere cosy to sit); it needs to be sociable - a place where you can see your guests while you cook. It needs, above all, to be practical, which is why kitchen designers employ the Golden Triangle method - measuring the distance between fridge, sink and stove, and trying to keep it to a minimum.
I wouldn't bother with an "island" (very 90s) or breakfast bar (80s). Go for a big farmhouse table, and a non-fitted kitchen which you can change around if you fancy it.
If you love coffee, it's worth having a Gaggia in your plan; ditto a wine cooler if you're into white wine. A friend of mine swears by a laundry chute. You must have easy access to recycling bins/compost bucket. Remember that you can get away with cheaper cupboards if you lavish money on your work tops. And do get a bigger fridge than you think you'll need - it will always be too small, guaranteed!