Mary,
Wholly Molly! How long and often is your grid down?
The 200W of solar should handle it, no problem. And some other stuff too, on a daily basis. Even in the snow belt.
With constant wind, just a simple and tiny conversion (box fan?) should handle keeping the batteries fully charged until the grid goes down. A 600W windmill for maintaining backup use batteries is an exercise in dumpload controls.
A 50W PV should be able to keep a few hundred AH 12V battery bank charged for back-up use.
Wind is still more fun.
G-