Solar seems to be less labor intensive over the long haul, it is cheap right now, and your plan seems reasonable, still I would plan on fixing up the turbine eventually because, at least where I am at, they seem to compliment each other rather well, in that it is often windy in December and January when we get little sun, and it is often bright when it is calm. For a battery system, I would think that having a bit of wind would require a smaller battery bank for the same percentage of operating time. Anyway, no hard numbers, just my thoughts, Rich