Determining a solar panel, is this correct?
Your units are confused. For reference:
$$Power(W)=Voltage(V)*Current(A)$$
$$Battery~Capacity(Ah)=Current(A)*Time(h)$$
$$Energy(Wh)=Power(W)*Time(h)=Battery~Capacity(Ah)*Voltage(V)$$

For solar panel output,


calculate total energy of one day
divide 1 by minimum peak sun hours
divide 2 by about 0.85


For battery capacity, you have to consider the day when there is no sun. Multiply 1 by longest no-sun period length.