2Cor, I would highly recommend doing a grid tied system like Nords has. Setting up a battery system is a major pain, and in most cities/counties probably will require that the city/county inspect your system. Possibly on a regular basis.
A grid tied system will be cheaper and you don't have to worry about running out of power.
If you really want to go completely off grid, I would suggest both solar and wind. Wind is typically stronger when solar is weak, and solar tends to be stronger when wind is weak (day/night, winter/summer).
We have a 2.5Kw system. Roofs work fine, although a south facing roof will get you the best results in most areas. We will likely be adding more soon
Nord is far more knowledgable than I am when it comes to solar. I am just throwing in my two cents