I would have space for a larger electrical service into the house than what you need immediately. We are always having to upgrade service in order to accommodate a renovation and there are always things you want to do in the future (even not major things). Our outdoor receptacles are on the same circuit as the receptacles in the garage - I would make sure that the exterior receptacles are on their own circuit so that if you want exterior landscape lighting in the future you don't blow the breaker all the time. I would also make sure that you have numerous outdoor receptacles for future landscape needs - ponds, fountains, grill, lighting, etc. We have multiple receptacles in our master bathroom and we requested that they not be on the same circuits. We can run hair dryers, curling irons, fans, etc. at the same time and never trip a GFCI or breaker. We have some friends that had one receptacle at each window wired together so that they can go to one switch and turn on Christmas decorations and not have to go around the house turning things on and off. Walk through your floor plan thinking about how you want to turn on lights as you enter and exit rooms. Think about how you plan to decorate - if you need floor receptacles, plan on them up front for lamps, etc. Put in wiring for hooking audio/visual and computers throughout the whole house. Plan for a place to put all of the audio/visual equipment and boxes into one room and use RF devices to control them. You never have to worry about exposed, ugly wires.