For a start, you should enter your location (at least the country) in your profile, then we have some idea of the amount of sunlight you might expect?.
Secondly, what sort of power are you expecting to get?, solar panels are very low power (even in bright sunlight), you need huge expensive panels to get a reasonable amount of power from them.
Because of the low power output, you would need efficient switch-mode regulator systems.
As you require four different rails, what is the current requirement for each rail?.