Nice, thats a great upgrade. I have been wanting to do the same to my house too, just havent bit the bullet on it yet. Who did you get them from?
I ordered the system from Wholesale Solar, and paid a company called Solar Permit Services do draw up the plans and detailed electrical line drawings. Wholesale Solar was fantastic to work with, I'd highly recommend them. Solar Permit Services was great at first, and then I probably wore out my welcome by making too many change requests. He flat out isn't responding to my emails anymore.
In the city of Loveland I can offset 100% of my previous years power consumption. So I averaged out my last 12 months of usage and designed a system that will get me as close to that 100% as I could. On paper the system is 14.5 kWh with 32 panels, each with a micro-inverter that converts the power from DC to AC at the panel. I guess that means if part of the array is shaded or covered in snow, the unobstructed panels will still produce and the whole array won't be compromised.
I'm actually kind of excited to get those first couple of power bills to see the real world numbers, and stop dealing in the hypothetical...